What landmarks is Serbia famous for?

Serbia boasts many incredible landmarks! Belgrade's Kalemegdan Fortress, a historical site overlooking the confluence of the Sava and Danube rivers, is a must-see. In Novi Sad, Petrovaradin Fortress offers stunning views and a rich history. The medieval monasteries of Studenica and Žiča, UNESCO World Heritage sites, showcase beautiful Byzantine architecture. Ravanica Monastery, with its unique architecture and historical significance, is another noteworthy site. And of course, you can't miss the breathtaking landscapes of Đerdap National Park.

What are the best apartments in Serbia?

Among the apartments in Serbia, 9 Apartments , Lovely Private Flats Free Parking and Vila Slap are the most popular ones.

What are the primary airports located in Serbia?

The main international airport is Belgrade Nikola Tesla Airport (BEG), serving most international flights. Konstantin Veliki Airport (INI) in Niš is another significant airport, handling both domestic and some international routes.

What are the best apartments with a pool in Serbia?

Apartmani Jović , Apartments Marconio Wellness Club and Sky Apartmani & Spa are the best apartments with a pool in Serbia.

Which currency is accepted in Serbia?

The official currency in Serbia is the Serbian dinar (RSD).

What are the best apartments with a jacuzzi in Serbia?

The best apartments with a jacuzzi in Serbia are Lovely Private Flats Free Parking , Vila Slap and Pink House Apartments .

Would you recommend driving as a mode of transport in Serbia?

Driving in Serbia can be challenging, especially in larger cities like Belgrade, due to traffic and sometimes less-than-ideal road conditions. Public transportation is generally efficient and affordable within cities, and buses connect many towns and cities. For longer distances, trains can be a good option. Consider renting a car only if you plan on exploring more rural areas, and be prepared for potentially challenging driving conditions.

What are the best apartments for families and kids in Serbia?

The best apartments for families and kids in Serbia are 9 Apartments , Vila Slap and Apartment Promenada .

What cultural practices should visitors respect when visiting Serbia?

Serbians are known for their hospitality. It's considered polite to greet people with a handshake, and to show respect for elders. When visiting homes or monasteries, dressing modestly is appreciated. Learning a few basic Serbian phrases will be well-received. Being mindful of local customs and traditions will enhance your experience.

What are the best pet friendly apartments in Serbia?

The best pet friendly apartments in Serbia are Airport Stay Apartments , Apartmani Jović and Vivio Luxury Apartment .

What annual festivals put Serbia on the map?

The EXIT Festival in Novi Sad is a major international music festival attracting thousands of attendees. Guča Trumpet Festival is a renowned brass band festival showcasing traditional Serbian music. Numerous smaller festivals celebrate local traditions and customs throughout the year, showcasing Serbia's rich cultural heritage.

What are the best apartments with parking in Serbia?

9 Apartments , Lovely Private Flats Free Parking and Vila Slap are the best apartments with parking in Serbia.

Are ride-hailing apps like Uber or local equivalents available in Serbia?

While Uber isn't widely available, several local ride-hailing apps, such as CarGo and Pink Taxi, operate in major cities and offer convenient transportation options.

Where are the best places to stay for a week in Serbia?

For a week-long trip, you could explore Belgrade, Novi Sad, and potentially a region like the Šar Mountains. Belgrade offers a mix of history, culture, and nightlife. Novi Sad provides a more relaxed atmosphere with beautiful architecture and the Petrovaradin Fortress. The Šar Mountains offer stunning natural beauty and opportunities for hiking.

Which areas are ideal for a weekend getaway in Serbia?

A weekend getaway could focus on Belgrade, exploring its historical sites, vibrant nightlife, and excellent restaurants. Alternatively, Novi Sad offers a charming alternative, with its fortress, city center, and proximity to Fruška Gora National Park for outdoor activities.

Serbia Apartments and Condos For Rent

9.8 87 reviews

Serbia

25/07 – 26/07

149 ﺩ.ﺇ/nightfor 1 night

Petković Apartmani 31 Studio

1 3

studio , Jagodina

Petković Apartmani 31 STUDIO is situated in a residential area of Jagodina, a short 0.8-kilometre walk from Aquapark Jagodina.
This self-contained apartment sleeps up to seven guests, boasting a fully equipped kitchen, air conditioning, free Wi-Fi, a private balcony, and access to a terrace with garden views, plus parking is available.

9.9 78 reviews

Serbia

27/08 – 03/09

161 ﺩ.ﺇ/nighttotal: 1127 ﺩ.ﺇ (7 )

Iskra Apartment

1 4

apartment , Kragujevac

Iskra Apartment, in Kragujevac, is conveniently located approximately 40 kilometres from Morava Airport.
This 37-square-metre flat offers one bedroom, one bathroom, and sleeps up to seven guests, boasting amenities including a dishwasher, air conditioning, a terrace, and free Wi-Fi; parking is also available.

9.2 398 reviews

Serbia

13/08 – 17/08

339 ﺩ.ﺇ/nighttotal: 1356 ﺩ.ﺇ (4 )

Sofie - Free Parking Place In The Garage

1 3

apartment , Belgrade

Sofie apartment offers a central Belgrade location, a short walk from Republic Square and within 2.25km of St. Sava Temple and 3.4km from Belgrade railway station.
This 49 square metre flat features one bedroom, one bathroom, free Wi-Fi, private parking, and a fully equipped kitchen; it comfortably accommodates a family and is close to local restaurants and a fitness centre.

9.8 87 reviews

Serbia

13/07 – 18/07

144 ﺩ.ﺇ/nighttotal: 720 ﺩ.ﺇ (5 )

Zlatiborski Konaci K16a10

1 4

apartment , Zlatibor

Zlatiborski Konaci K16A10 is a recently renovated apartment in Zlatibor, conveniently located approximately 105km from Morava Airport and offering easy access to local winter sports.
This 25 square metre flat features one bedroom, one bathroom, and accommodates up to seven guests, boasting a private patio, swimming pool, spa, sauna, and free Wi-Fi.

9.0 1646 reviews

Serbia

21/07 – 22/07

898 ﺩ.ﺇ/nightfor 1 night

Chess Apartments

2 10

apartment , Belgrade

Chess Apartments are located in Belgrade, just a short walk from St. Sava Temple and a few kilometres from Belgrade Train Station, making it easy to explore the city's key landmarks. The apartments have received excellent ratings for their cleanliness, location and overall experience.
The apartments offer a variety of layouts, including some with fully equipped kitchens featuring dishwashers. Guests can enjoy amenities such as free Wi-Fi, parking, a shared lounge area, a restaurant serving Italian, international and European cuisine, and a garden view from their balcony.

9.7 52 reviews

Serbia

27/06 – 01/07

127 ﺩ.ﺇ/nighttotal: 508 ﺩ.ﺇ (4 )

Stancic 019

2 2

apartment , Zaječar

Stančić 019, a Zaječar apartment near the city centre, is conveniently located approximately 45km from Magura Cave and 105km from Constantine the Great Airport.
This 68 square metre self-catering property features two bedrooms, a living room, a fully equipped kitchen including fridge, freezer and microwave, a private garden with barbecue facilities, private parking, air conditioning, and free Wi-Fi; ideal for families or groups of up to four.

9.7 244 reviews

Serbia

25/07 – 26/07

161 ﺩ.ﺇ/nightfor 1 night

Exceptional Accommodation

1 3

apartment , Čačak

This Čačak apartment, ideally located near major attractions, is approximately 37 kilometres from Rudnik Spa and 42 kilometres from Žiča Monastery.
The 37-square-metre flat offers one bedroom, one bathroom, a fully equipped kitchen, air conditioning, a jacuzzi, a terrace, and free parking, perfect for a family or couple seeking a comfortable stay with access to a tennis court and concierge service.

9.6 53 reviews

Serbia

30/07 – 02/08

123 ﺩ.ﺇ/nighttotal: 369 ﺩ.ﺇ (3 )

Crnjanski Paun L

1 1

apartment , Jagodina

Crnjanski Paun L apartment is situated in Jagodina, Serbia, a mere 0.2 kilometres from Aquapark Jagodina.
This self-catering flat offers 32 square metres of space, comprising one bedroom, one bathroom, and can accommodate up to five guests, boasting a private terrace, garden access, swimming pool, sauna, and free Wi-Fi.

9.7 101 reviews

Serbia

23/07 – 24/07

164 ﺩ.ﺇ/nightfor 1 night

Sofija Apartman Zlatibor

1 4

apartment , Zlatibor

Sofija Apartman Zlatibor is located in Zlatibor, Serbia, approximately 105km from Morava Airport and conveniently close to winter sports activities.
This 35 square metre flat offers one bedroom, one bathroom, sleeps seven guests, and includes free Wi-Fi, private parking, a terrace, and a kitchen with a microwave and fridge.

10 17 reviews

Serbia

03/08 – 10/08

209 ﺩ.ﺇ/nighttotal: 1463 ﺩ.ﺇ (7 )

Planina Rudnik | Vikend Kuca Pod Lipom

1 3

apartment , Rudnik

This Rudnik holiday home, sleeping six across two bedrooms and one bathroom, offers self-catering facilities, parking, and Wi-Fi.
The property boasts excellent cleanliness and location ratings, allowing guests easy access to Rudnik's attractions (precise distances to landmarks require further clarification).

9.9 285 reviews

Serbia

22/08 – 27/08

149 ﺩ.ﺇ/nighttotal: 745 ﺩ.ﺇ (5 )

Trident Apartments

1 2

apartment , Niš

This apartment in Niš is located in a convenient spot, just a short walk from the National Theatre and King Milan Square, and within walking distance of the Niš Fortress and the Monument to the Liberators of Niš.
The 36 square metre flat has a bedroom, bathroom, and a terrace with garden views, and is equipped with a kitchen, air conditioning, and free Wi-Fi.

9.8 473 reviews

Serbia

10/07 – 12/07

126 ﺩ.ﺇ/nighttotal: 252 ﺩ.ﺇ (2 )

Dandelo

1 2

apartment , Novi Sad

Dandelo apartment in Novi Sad offers a convenient location, within a 1km radius of Promenada Shopping Mall, SPENS Sports Centre, and a short distance from the Serbian National Theatre and Museum of Vojvodina.
This 20-square-metre flat features one bedroom, one bathroom, sleeps three guests, and includes a private balcony, air conditioning, and a kitchen with a microwave and fridge.

Best family friendly Serbia apartment rentals

Among the 53661 accommodations in Serbia, here are the 4 best family friendly apartments

9.9 27 reviews

Serbia

14/07 – 16/07

134 ﺩ.ﺇ/nighttotal: 268 ﺩ.ﺇ (2 )

T&m Apartman

1 2

apartment , Paraćin

This one-bedroom apartment near Paraćin, Serbia, is conveniently located 19 kilometres from Aquapark Jagodina and 82 kilometres from Constantine the Great Airport.
The 52-square-metre flat offers a fully equipped kitchen, air conditioning, a terrace, parking, and sleeps up to five guests, making it ideal for families visiting the Paraćin area.

9.6 43 reviews

Serbia

03/08 – 09/08

214 ﺩ.ﺇ/nighttotal: 1284 ﺩ.ﺇ (6 )

Apartman Vuk Zlatibor

1 10

apartment , Zlatibor

Apartman Vuk Zlatibor is situated in the Zlatibor district, approximately 106 kilometres from Morava Airport, offering convenient access to local skiing and hiking trails.
This self-catering flat, sleeping up to two guests, boasts a 33 square metre floor area with a bedroom, bathroom, fully equipped kitchen, private garden, balcony offering mountain views, free Wi-Fi, and free private parking.

9.8 169 reviews

Serbia

25/07 – 26/07

161 ﺩ.ﺇ/nightfor 1 night

Sombor 19 Central Apartment

1 3

apartment , Sombor

Sombor 19 Central Apartment is located in the centre of Sombor, a short walk from the main square and 67km from Osijek Airport. The apartment has consistently received excellent ratings for its location, cleanliness, and overall experience.
The apartment has one bedroom and one bathroom, providing comfortable accommodation for a small family or group of friends. Guests can enjoy a private terrace, air conditioning, free Wi-Fi, and parking, as well as access to a shared garden.

10 19 reviews

Serbia

03/08 – 10/08

815 ﺩ.ﺇ/nighttotal: 5705 ﺩ.ﺇ (7 )

Casa Tranquila De Teodor

1 3

apartment , Jablanica

This Zlatibor house, near Ribnica Lake and the Gold Gondola station, offers convenient access to Zlatibor's natural beauty.
The two-bedroom property sleeps six, boasting a kitchen, air conditioning, a jacuzzi, parking, internet access, and includes ATVs and e-bikes for exploring the surrounding area.

Top cities

Best Serbia apartments rentals with a pool

Among the 53661 accommodations in Serbia, here are the 4 best apartment with a pool

Serbia

13/08 – 20/08

395 ﺩ.ﺇ/nighttotal: 2765 ﺩ.ﺇ (7 )

Spa & Wellness Grand 50

1 8

apartment , Zlatibor

This apartment in Zlatibor offers a peaceful retreat situated away from the town centre, providing easy access to winter sports and the surrounding scenic region.
This 65 square metre flat accommodates up to 15 guests, featuring one bedroom, one bathroom, a fully equipped kitchen, air conditioning, Wi-Fi, a private terrace, and private parking.

10 1 review

Serbia

03/08 – 10/08

229 ﺩ.ﺇ/nighttotal: 1603 ﺩ.ﺇ (7 )

Evergreen Apartment 9c/75 At Kraljevi ČArdaci

1 3

apartment , Kopaonik

Evergreen Apartment 9C/75 is located at Kraljevi Čardaci in Kopaonik, with Morava Airport situated 109 kilometres away.
This family-friendly studio apartment, covering 25 square metres and accommodating up to five guests, offers a private swimming pool, shared sauna and hot tub, a well-equipped kitchen, and on-site dining and bar facilities.

10 4 reviews

Serbia

03/08 – 10/08

219 ﺩ.ﺇ/nighttotal: 1533 ﺩ.ﺇ (7 )

Apartman Tiva - Milmari Resort-garažno Mesto-gratis

1 3

apartment , Kopaonik

Apartman Tiva, located in the Milmari Resort area of Kopaonik, offers convenient access to local sightseeing tours and is approximately 113 kilometres from Morava Airport.
This self-catering apartment boasts 31 square metres of space, comprising one bedroom, a living room, a fully equipped kitchen, and a bathroom, accommodating up to six guests and featuring a private patio with mountain views, free Wi-Fi, parking, and access to a swimming pool, sauna, and spa.

9.6 67 reviews

Serbia

08/08 – 18/08

168 ﺩ.ﺇ/nighttotal: 1680 ﺩ.ﺇ (10 )

Zlatni Bor Apartment

1 4

apartment , Zlatibor

Zlatni Bor Apartment is situated in Zlatibor, Serbia, approximately 105 kilometres from Morava Airport and offers convenient access to local amenities and winter sports.
This 33-square-metre self-catering flat features one bedroom, one bathroom, sleeps seven guests, and boasts a private balcony, a fully equipped kitchen, free Wi-Fi, and access to a swimming pool, jacuzzi, sauna, spa, restaurant, bar, fitness centre, and tennis court.

Frequently Asked Questions about apartment rentals in Serbia

What landmarks is Serbia famous for?
Serbia boasts many incredible landmarks! Belgrade's Kalemegdan Fortress, a historical site overlooking the confluence of the Sava and Danube rivers, is a must-see. In Novi Sad, Petrovaradin Fortress offers stunning views and a rich history. The medieval monasteries of Studenica and Žiča, UNESCO World Heritage sites, showcase beautiful Byzantine architecture. Ravanica Monastery, with its unique architecture and historical significance, is another noteworthy site. And of course, you can't miss the breathtaking landscapes of Đerdap National Park.
What are the best apartments in Serbia?
Among the apartments in Serbia, 9 Apartments, Lovely Private Flats Free Parking and Vila Slap are the most popular ones.
What are the primary airports located in Serbia?
The main international airport is Belgrade Nikola Tesla Airport (BEG), serving most international flights. Konstantin Veliki Airport (INI) in Niš is another significant airport, handling both domestic and some international routes.
What are the best apartments with a pool in Serbia?
Apartmani Jović, Apartments Marconio Wellness Club and Sky Apartmani & Spa are the best apartments with a pool in Serbia.
Which currency is accepted in Serbia?
The official currency in Serbia is the Serbian dinar (RSD).
What are the best apartments with a jacuzzi in Serbia?
The best apartments with a jacuzzi in Serbia are Lovely Private Flats Free Parking, Vila Slap and Pink House Apartments.
Would you recommend driving as a mode of transport in Serbia?
Driving in Serbia can be challenging, especially in larger cities like Belgrade, due to traffic and sometimes less-than-ideal road conditions. Public transportation is generally efficient and affordable within cities, and buses connect many towns and cities. For longer distances, trains can be a good option. Consider renting a car only if you plan on exploring more rural areas, and be prepared for potentially challenging driving conditions.
What are the best apartments for families and kids in Serbia?
The best apartments for families and kids in Serbia are 9 Apartments, Vila Slap and Apartment Promenada.
What cultural practices should visitors respect when visiting Serbia?
Serbians are known for their hospitality. It's considered polite to greet people with a handshake, and to show respect for elders. When visiting homes or monasteries, dressing modestly is appreciated. Learning a few basic Serbian phrases will be well-received. Being mindful of local customs and traditions will enhance your experience.
What are the best pet friendly apartments in Serbia?
The best pet friendly apartments in Serbia are Airport Stay Apartments, Apartmani Jović and Vivio Luxury Apartment.
What annual festivals put Serbia on the map?
The EXIT Festival in Novi Sad is a major international music festival attracting thousands of attendees. Guča Trumpet Festival is a renowned brass band festival showcasing traditional Serbian music. Numerous smaller festivals celebrate local traditions and customs throughout the year, showcasing Serbia's rich cultural heritage.
What are the best apartments with parking in Serbia?
9 Apartments, Lovely Private Flats Free Parking and Vila Slap are the best apartments with parking in Serbia.
Are ride-hailing apps like Uber or local equivalents available in Serbia?
While Uber isn't widely available, several local ride-hailing apps, such as CarGo and Pink Taxi, operate in major cities and offer convenient transportation options.
Where are the best places to stay for a week in Serbia?
For a week-long trip, you could explore Belgrade, Novi Sad, and potentially a region like the Šar Mountains. Belgrade offers a mix of history, culture, and nightlife. Novi Sad provides a more relaxed atmosphere with beautiful architecture and the Petrovaradin Fortress. The Šar Mountains offer stunning natural beauty and opportunities for hiking.
Which areas are ideal for a weekend getaway in Serbia?
A weekend getaway could focus on Belgrade, exploring its historical sites, vibrant nightlife, and excellent restaurants. Alternatively, Novi Sad offers a charming alternative, with its fortress, city center, and proximity to Fruška Gora National Park for outdoor activities.

Best Serbia apartment rentals with air conditioning

9.6 128 reviews

Serbia

27/06 – 01/07

191 ﺩ.ﺇ/nighttotal: 764 ﺩ.ﺇ (4 )

Mili Lux Apartman

1 4

apartment , Novi Sad

Mili Lux Apartman, a family-friendly flat in Novi Sad, is conveniently located within a 1.6km radius of the Serbian National Theatre and the Museum of Vojvodina, offering easy access to Promenada Shopping Mall and SPENS Sports Centre.
This 35 square metre self-catering apartment features a terrace with garden views, a fireplace, a dressing room, free Wi-Fi, and amenities for disabled guests, and includes a mini-market within the building.

9.6 458 reviews

Serbia

30/07 – 02/08

90 ﺩ.ﺇ/nighttotal: 270 ﺩ.ﺇ (3 )

Viv Apartment 1

1 1

apartment , Niš

VIV Apartment 1 in Niš offers a convenient base for exploring the city, situated within walking distance of King Milan Square and Niš Fortress, and approximately 1.6km from the Monument to the Liberators of Niš.
This 20-square-metre flat features one bedroom, one bathroom, sleeps three guests, and includes amenities such as Wi-Fi, air conditioning, a private balcony, and on-site parking.

9.6 46 reviews

Serbia

13/08 – 17/08

419 ﺩ.ﺇ/nighttotal: 1676 ﺩ.ﺇ (4 )

Casa Dafin Tekija - Kladovo

2 3

apartment , Tekija

Casa DaFin Tekija, near Kladovo, offers a 65 square metre (700 square feet) two-bedroom apartment, conveniently located 18km from Iron Gate I and 11km from Cazanele Dunării.
This self-catering flat features a fully equipped kitchen, private patio, access to a sauna, hot tub and spa, plus free Wi-Fi and parking; perfect for families seeking a relaxing break with mountain views.

9.5 501 reviews

Serbia

25/07 – 26/07

191 ﺩ.ﺇ/nightfor 1 night

Apartmani Sterija

1 3

studio , Novi Sad

Apartmani Sterija is situated in the city centre of Novi Sad, within a 1.5 kilometre walk of the Serbian National Theatre and the Museum of Vojvodina. This apartment has received excellent ratings for location, cleanliness and overall user experience.
This one-bedroom flat has a kitchen with a fridge and microwave, as well as a garden and parking. Guests can enjoy air conditioning, free Wi-Fi, and the option of renting a bicycle or car to explore the city and its surroundings.

Best pet-friendly Serbia apartment rentals

9.8 722 reviews

Serbia

13/08 – 17/08

657 ﺩ.ﺇ/nighttotal: 2628 ﺩ.ﺇ (4 )

Vivio Luxury Apartment

2 3

apartment , Belgrade

This apartment is situated in the Savski Venac district of Belgrade, just 700 metres from Republic Square and 1.3 kilometres from the National Assembly, offering easy access to the city’s main attractions. The apartment has received excellent user, location, and cleanliness ratings, ensuring a comfortable and enjoyable stay.
The apartment is a 2-bedroom, 70 square metre property with a living room, fully equipped kitchen and a bathroom. It offers a range of amenities including air conditioning, a terrace, a garden, free Wi-Fi, a private bar, parking, and laundry service.

9.7 38 reviews

Serbia

03/08 – 09/08

425 ﺩ.ﺇ/nighttotal: 2550 ﺩ.ﺇ (6 )

Kuća Za Odmor Jovanović

5 10

apartment , Gornja Koprivna

Kuća Za Odmor Jovanović is a self-catering apartment in Gornja Koprivna, approximately 132km from Morava Airport.
This 60 square metre property sleeps nine guests and features a private entrance, terrace with mountain views, fully equipped kitchen, a garden, parking and a bathroom with shower.

9.4 909 reviews

Serbia

21/07 – 22/07

622 ﺩ.ﺇ/nightfor 1 night

Apartments Milev

4 10

apartment , Mokra Gora

Apartments Milev is situated in Mokra Gora, Serbia, 0.5km from the rail station and 4.3km from Mokra Gora Nature Park, offering easy access to local attractions.
This self-catering flat boasts 55 square metres of space, a private balcony and terrace, free Wi-Fi, parking, and a full kitchen, perfect for families or small groups exploring the surrounding area.

9.3 187 reviews

Serbia

12/07 – 14/07

210 ﺩ.ﺇ/nighttotal: 420 ﺩ.ﺇ (2 )

Villa Dama & Dubravka

1 5

apartment , Zlatibor

This apartment in Zlatibor, Central Serbia, is located just a short distance from the town's attractions and offers stunning mountain views. It has received excellent ratings for cleanliness, location, and user experience.
The apartment is spacious and comfortable, with a fully equipped kitchen, a comfortable living area, and a private patio with mountain views. Guests can enjoy a private hot tub, a tranquil garden, outdoor play equipment, free Wi-Fi, and private parking.

Apartments and Condos in Serbia

53661 Apartments or condos in Serbia

Petković Apartmani 31 Studio

Iskra Apartment

Sofie - Free Parking Place In The Garage

Zlatiborski Konaci K16a10

Chess Apartments

Stancic 019

Exceptional Accommodation

Crnjanski Paun L

Sofija Apartman Zlatibor

Planina Rudnik | Vikend Kuca Pod Lipom

Trident Apartments

Dandelo

Best family friendly Serbia apartment rentals

T&m Apartman

Apartman Vuk Zlatibor

Sombor 19 Central Apartment

Casa Tranquila De Teodor

Top cities

Best Serbia apartments rentals with a pool

Spa & Wellness Grand 50

Evergreen Apartment 9c/75 At Kraljevi ČArdaci

Apartman Tiva - Milmari Resort-garažno Mesto-gratis

Zlatni Bor Apartment

Frequently Asked Questions about apartment rentals in Serbia

Best Serbia apartment rentals with air conditioning

Mili Lux Apartman

Viv Apartment 1

Casa Dafin Tekija - Kladovo

Apartmani Sterija

Best pet-friendly Serbia apartment rentals

Vivio Luxury Apartment

Kuća Za Odmor Jovanović

Apartments Milev

Villa Dama & Dubravka