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Hotels in Kosai

November 2026
December 2026

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Next weekend
Oct 23 - Oct 25
In two weeks
Oct 30 - Nov 1

Where to stay in Kosai?

A buffet line with various food items and condiments.
A multi-story hotel with a green roof and numerous windows.
A hotel lobby with seating areas, a reception desk, and a coffee machine.
Vending machines with various beverages and snacks.

1. Hotel Route Inn Hamanako

Hotel Route Inn Hamanako
Kosai
$75
$82 total
Nov 17 - Nov 18
Hotel Route Inn Hamanako
A balcony with wicker chairs and a table, overlooking a body of water and greenery.
A sunroom with a view of a lush landscape, furnished with wicker chairs and a glass table.
A traditional Japanese-style room with tatami flooring, a low table, a sofa, a television, and a refrigerator.
A room with a television, a desk with a kettle, a chair, and a window with curtains.

2. Tabist Kosai Hamanako no Yado

Tabist Kosai Hamanako no Yado
Kosai
$30
$33 total
Oct 23 - Oct 24
Tabist Kosai Hamanako no Yado
A traditional Japanese-style room with tatami flooring, a woven rattan ottoman, and a view of a cityscape through large windows.
A hotel room with two beds, a TV, a desk, and a view of the water.
A reception desk with a sign reading "LE SENSORIEL" and a potted plant in the foreground.
A restaurant with large windows offering a view of a sunset over a body of water.

3. Grand Mercure Lake Hamana Resort & Spa

Grand Mercure Lake Hamana Resort & Spa
Nishi Ward
$44
$56 total
Oct 21 - Oct 22
Grand Mercure Lake Hamana Resort & Spa
A marina with several boats docked, a pier extending into the water, and a distant mountain range.
A sunset over a calm body of water with a dock and boats.
A traditional Japanese building with a tiled roof, wooden doors, and a gated entrance.
A cluttered storage area with various items, including boxes and debris, in a residential setting.

4. Minshuku Takahashi Kashibuneten

Minshuku Takahashi Kashibuneten
Nishi Ward
$63
$70 total
Oct 19 - Oct 20
Minshuku Takahashi Kashibuneten
A desk with a desk lamp, a telephone, and a power adapter.
A hotel room with a bed, a desk with a chair, a small refrigerator, an air conditioning unit, a wall-mounted TV, and a door with a handle.
A classroom with desks, chairs, a clock, a TV, and a vending machine.
A multi-story hotel building with a sign for 'TOYOTA INN' at the top.

5. Toyoko Inn Hamamatsu-eki Minami-guchi

Toyoko Inn Hamamatsu-eki Minami-guchi
Naka Ward
$55
$60 total
Oct 19 - Oct 20
Toyoko Inn Hamamatsu-eki Minami-guchi
A spacious lobby with a reception desk, a seating area, and a decorative plant centerpiece.
A modern kitchen with chefs preparing food, stainless steel cooking stations, and a decorative wall with a leaf pattern.
A hotel hallway with doors on both sides, carpeted floor, and recessed lighting.
A modern hotel with a prominent white facade, multiple floors, and a rooftop terrace.

6. Hotel Associa Toyohashi

Hotel Associa Toyohashi
Toyohashi
$64
$78 total
Oct 25 - Oct 26
Hotel Associa Toyohashi
A hotel lobby with a reception desk, glass doors, and a staircase.
Bar (on property)
A modern hotel room with a large bed, a desk, a chair, and a small ottoman.
A modern gym with exercise equipment, a wall of dumbbells, and large windows.

7. Crowne Plaza - ANA Hamamatsu by IHG

Crowne Plaza - ANA Hamamatsu by IHG
Naka Ward
$56
$84 total
Nov 2 - Nov 3
Crowne Plaza - ANA Hamamatsu by IHG
A hot spring area with a stone floor, wooden rocks, and a view of a wooden fence through a window.
A modern lobby with a reception desk, a patterned wall, and an elevator.
A modern kitchen with wooden cabinetry, stainless steel appliances, and a buffet area with various food items.
A modern hotel with multiple floors, a prominent tower, and a well-lit facade.

8. Dormy Inn EXPRESS Toyohashi Hot Spring

Dormy Inn EXPRESS Toyohashi Hot Spring
Toyohashi
$63
$70 total
Oct 25 - Oct 26
Dormy Inn EXPRESS Toyohashi Hot Spring
The exterior of the Centurion Hotel with a clear view of the entrance, including the name and address.
A buffet with various dishes including seafood, salads, and noodles.
A lobby with seating arrangements, a reception desk, and a wall decorated with colorful artwork.
A long, narrow hotel corridor with wooden doors on both sides and a carpeted floor.

9. Centurion Hotel Hamamatsu

Centurion Hotel Hamamatsu
Naka Ward
$30
$34 total
Nov 15 - Nov 16
Centurion Hotel Hamamatsu
A high-rise room with a city view, large windows, a sofa, and a table with a lamp.
A spacious lobby with a central reception desk, a large bookshelf filled with books, and a modern chandelier.
A high-rise room with a city view, featuring a sofa, armchairs, and a coffee table.
A modern hotel room with a large city view, a flat-screen TV, a desk, and a comfortable bed with multiple pillows.

10. Hotel Arc Riche Toyohashi

Hotel Arc Riche Toyohashi
Toyohashi
$88
$97 total
Oct 26 - Oct 27
Hotel Arc Riche Toyohashi
A spacious lobby with a central seating area, a bar, and a staircase.
A modern hotel room with a sofa, armchair, round table, large window, and a flat-screen TV.
A modern room with a sofa, a chair, a round table, and a large window with a city view.
A hotel room with a large bed, a TV, a balcony with a table and chairs, and a view of the city.

11. Hamamatsu Marriott Hotel

Hamamatsu Marriott Hotel
Naka Ward
$76
$92 total
Oct 20 - Oct 21
Hamamatsu Marriott Hotel
A modern breakfast buffet with various food items and a chef preparing food.
Room
A spacious lobby with a central escalator, multiple seating areas, and digital information displays.
A hotel lobby with three elevator doors, a reception desk, and a wall-mounted sign.

12. Hotel Concorde Hamamatsu

Hotel Concorde Hamamatsu
Naka Ward
$47
$57 total
Nov 10 - Nov 11
Hotel Concorde Hamamatsu
A building with a large arched entrance and a glass door, illuminated by interior lighting.
A restaurant with a long counter, chairs, and a small table. There is a sink and a plant on the counter.
A hotel room with a TV, two beds, a desk with a lamp, and a window with curtains.
A reception desk with a sign reading "INFORMATION FRONT" and a brick wall in the background.

13. Hotel Select Inn Hamamatsu Ekimae

Hotel Select Inn Hamamatsu Ekimae
Naka Ward
$40
$48 total
Nov 15 - Nov 16
Hotel Select Inn Hamamatsu Ekimae
A library cafe with wooden tables and chairs, bookshelves, and a coffee bar.
A modern library with wooden tables and chairs, bookshelves, and a large window with blinds.
A modern hallway with a large wall mural, carpeted flooring, and recessed lighting.
A laundry facility with multiple washing machines and dryers, including a CO/N washer and a 45kg dryer.

14. Comfort Hotel Hamamatsu

Comfort Hotel Hamamatsu
Naka Ward
$47
$52 total
Oct 29 - Oct 30
Comfort Hotel Hamamatsu
Two self-service kiosks with screens, a neon sign, and a small shelf with brochures.
A pair of elevator doors with digital displays above them, set in a modern building interior.
A reception desk with a neon sign, two computers, and a trash bin.
A laundry facility with multiple washing machines and dryers, arranged in a row with control panels on top.

15. Toyoko Inn Toyohashi Ekimae Odori

Toyoko Inn Toyohashi Ekimae Odori
Toyohashi
$60
$66 total
Nov 6 - Nov 7
Toyoko Inn Toyohashi Ekimae Odori
A modern indoor swimming pool with a wooden ceiling and tiled floor, surrounded by black seating and potted plants.
A reception desk with a glass partition, a framed artwork of a pagoda, and a small table with a calendar and a phone.
A hotel room with two beds, a bedside table, a lamp, a TV, and a painting on the wall.
A restaurant with wooden tables and chairs, high ceilings with recessed lighting, and a view of the cityscape through the windows.

16. Hotel Route Inn Toyohashi Ekimae

Hotel Route Inn Toyohashi Ekimae
Toyohashi
$66
$73 total
Oct 25 - Oct 26
Hotel Route Inn Toyohashi Ekimae
A buffet with various food items and beverages, a counter with a cash register, and a seating area with a view of the cityscape.
Room
Restaurant
A multi-story hotel with a modern facade, a visible entrance, and a parking structure adjacent to it.

17. HOTEL SUI HAMAMATSU

HOTEL SUI HAMAMATSU
Naka Ward
$49
$54 total
Nov 17 - Nov 18
HOTEL SUI HAMAMATSU
A modern hotel entrance with a prominent 'EN HOTEL' sign, a wooden deck, and potted plants.
The exterior of a hotel with a modern design, featuring a glass entrance, a potted tree, and a sign that reads "EN HOTEL".
A wall with a QR code, the letters "EN" and "JOY" with a wine glass icon, and a circular metallic object.
A hotel corridor with geometric patterned walls, a large guitar decoration, and doors numbered 810-818.

18. EN HOTEL Hamamatsu

EN HOTEL Hamamatsu
Naka Ward
$39
$48 total
Nov 2 - Nov 3
EN HOTEL Hamamatsu
Restaurant
A modern interior with a curved staircase, a carpeted floor, and a tiled wall.
A reception desk with a nameplate reading "Richmond" and a person in a business suit shaking hands with another individual.
A hotel room with two beds, a desk, a TV, and a small table.

19. Richmond Hotel Hamamatsu

Richmond Hotel Hamamatsu
Naka Ward
$64
$70 total
Nov 15 - Nov 16
Richmond Hotel Hamamatsu
A modern hotel building with a prominent "HOTEL LEON" sign.
A modern hotel reception area with a geometric patterned wall, a reception desk, and a staircase leading to the upper floor.
A modern workspace with two monitors, a keyboard, and a mouse on a desk.
A modern lounge area with leather sofas, a chandelier, and wall-mounted lighting fixtures.

20. Hotel Leon Hamamatsu

Hotel Leon Hamamatsu
Naka Ward
$37
$41 total
Oct 25 - Oct 26
Hotel Leon Hamamatsu
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Go beyond your typical stay in Kosai

pet friendly image
Pet friendly
Pet friendly
Pool image
Pool
Pool
hot tub image
Hot tub
Hot tub
spa image
Spa
Spa
Family friendly image
Family friendly
Family friendly
ryokan image
Ryokan
Ryokan
Our prices for hotels in Kosai are cheapest in June

Price trends for hotels in Kosai

Pricing is based on two traveler single night rates
View properties in October

October

High 22°C / low 16°C. Partly sunny.
22°
16°
17°
11°
11°
5°
9°
3°
10°
3°
14°
6°
18°
10°
22°
15°
25°
19°
28°
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Monthly weather averages (˚C)

Top landmarks in Kosai

Arai Benten Beach

7.0/10 (2 reviews)
Whether you want to hunt for sand dollars or smell the fresh air, Arai Benten Beach is a spot you might want to check out, located 5.1 mi (8.2 km) from central Kosai. Catch the sunset by the shore at Arai Beach, just a short walk away.
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Arai Beach

7.0/10 (2 reviews)
Whether you want to hunt for sand dollars or smell the fresh air, Arai Beach is a spot you might want to check out, located 4.7 mi (7.6 km) from central Kosai. Catch the sunset by the shore at Arai Benten Beach, just a short walk away.
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Honkoji Temple

Honkoji Temple is 6.5 mi (10.4 km) from central Kosai, why not stop by during your stay.
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Sakichi Toyoda Memorial House

6.0/10 (2 reviews)
Sakichi Toyoda Memorial House is just one of the landmarks located 5.9 mi (9.5 km) from central Kosai, so you might want to stop by for a few pics during your trip.
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Ogaji Temple

6.0/10 (2 reviews)
Ogaji Temple is 5.3 mi (8.6 km) from central Kosai, why not stop by during your stay.
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Myoryuji Temple

Myoryuji Temple is 6.5 mi (10.4 km) from central Kosai, why not stop by during your stay.
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Road Station Shiomisaka

Road Station Shiomisaka is worth a visit, located 4.1 mi (6.6 km) from central Kosai.
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Learn more about Kosai

Kosai is well-known for its attractions such as Lake Hamana and Arai Beach.

See all hotels in Kosai
A traditional Japanese gate with a tiled roof and a sign with Japanese characters.

Check out reviews of Kosai hotels guests love

A marina with several boats docked, a pier extending into the water, and a distant mountain range.
A sunset over a calm body of water with a dock and boats.
A traditional Japanese building with a tiled roof, wooden doors, and a gated entrance.
A cluttered storage area with various items, including boxes and debris, in a residential setting.

Minshuku Takahashi Kashibuneten

Minshuku Takahashi Kashibuneten
Nishi Ward

10/10 Exceptional

United States
Yoong
Minshuku Takahashi Kashibuneten
A spacious lobby with a reception desk, a seating area, and a decorative plant centerpiece.
A modern kitchen with chefs preparing food, stainless steel cooking stations, and a decorative wall with a leaf pattern.
A hotel hallway with doors on both sides, carpeted floor, and recessed lighting.
A modern hotel with a prominent white facade, multiple floors, and a rooftop terrace.

Hotel Associa Toyohashi

Hotel Associa Toyohashi
Toyohashi

10/10 Exceptional

United States
Denise
Hotel Associa Toyohashi
A balcony with wicker chairs and a table, overlooking a body of water and greenery.
A sunroom with a view of a lush landscape, furnished with wicker chairs and a glass table.
A traditional Japanese-style room with tatami flooring, a low table, a sofa, a television, and a refrigerator.
A room with a television, a desk with a kettle, a chair, and a window with curtains.

Tabist Kosai Hamanako no Yado

Tabist Kosai Hamanako no Yado
Kosai

10/10 Exceptional

United States
Sigrid
Tabist Kosai Hamanako no Yado
A desk with a desk lamp, a telephone, and a power adapter.
A hotel room with a bed, a desk with a chair, a small refrigerator, an air conditioning unit, a wall-mounted TV, and a door with a handle.
A classroom with desks, chairs, a clock, a TV, and a vending machine.
A multi-story hotel building with a sign for 'TOYOTA INN' at the top.

Toyoko Inn Hamamatsu-eki Minami-guchi

Toyoko Inn Hamamatsu-eki Minami-guchi
Naka Ward

8/10 Very good

United States
Kenichi
Toyoko Inn Hamamatsu-eki Minami-guchi
A hot spring area with a stone floor, wooden rocks, and a view of a wooden fence through a window.
A modern lobby with a reception desk, a patterned wall, and an elevator.
A modern kitchen with wooden cabinetry, stainless steel appliances, and a buffet area with various food items.
A modern hotel with multiple floors, a prominent tower, and a well-lit facade.

Dormy Inn EXPRESS Toyohashi Hot Spring

Dormy Inn EXPRESS Toyohashi Hot Spring
Toyohashi

10/10 Exceptional

United States
Christopher
Dormy Inn EXPRESS Toyohashi Hot Spring
A modern train station with two sleek bullet trains on adjacent tracks, a pedestrian bridge overhead, and a tall building in the background.
A spacious lobby with a grand piano, seating area, and a large decorative column.
A modern kitchen with a large island, bar stools, and a city view through large windows.
A spacious lobby with high ceilings, large golden columns, and a polished marble floor.

Okura Act City Hotel Hamamatsu

Okura Act City Hotel Hamamatsu
Naka Ward

10/10 Exceptional

United States
Ernesto
Okura Act City Hotel Hamamatsu
A library cafe with wooden tables and chairs, bookshelves, and a coffee bar.
A modern library with wooden tables and chairs, bookshelves, and a large window with blinds.
A modern hallway with a large wall mural, carpeted flooring, and recessed lighting.
A laundry facility with multiple washing machines and dryers, including a CO/N washer and a 45kg dryer.

Comfort Hotel Hamamatsu

Comfort Hotel Hamamatsu
Naka Ward

10/10 Exceptional

United States
Tomoko
Comfort Hotel Hamamatsu
A spacious indoor area with a wooden table and chairs, surrounded by potted plants and large windows allowing natural light.
A modern interior with glass walls, wooden beams, and a view of greenery.
A modern indoor pool area with large windows, a clear view of the outdoors, and a sleek, minimalist design.
A modern building with large glass windows and a reflective pool.

GREENITY IWATA

GREENITY IWATA
Iwata

10/10 Exceptional

United States
Mark
GREENITY IWATA
A hotel room with two beds, a desk, a chair, and a window with curtains.
A reception area with a marble counter, two computers, a clock, and a first aid kit.
A row of white, modern, front-loading washing machines in a commercial setting.
A classroom with tables and chairs, a clock on the wall, and large windows.

Comfort Hotel Toyohashi

Comfort Hotel Toyohashi
Toyohashi

10/10 Exceptional

United States
Joshua
Comfort Hotel Toyohashi
A hotel with a modern facade, large windows, and a prominent entrance with a covered area.
A buffet setup with various food items and a decorative centerpiece.
A white church with a cross on the front, surrounded by a garden with potted plants and a white gazebo.
A hotel room with two beds, a television, and a large window with curtains.

Loisir Hotel Toyohashi

Loisir Hotel Toyohashi
Toyohashi

10/10 Exceptional

United States
Alain
Loisir Hotel Toyohashi

Frequently Asked Questions

What accommodations do travelers recommend in Kosai?

Guests like Hotel Route Inn Hamanako, Tabist Kosai Hamanako no Yado and Grand Mercure Lake Hamana Resort & Spa.

Can I book refundable hotels in Kosai?

If you need the flexibility to change your travel plans to Kosai, most properties offer refundable* rates you can book. You can see these accommodations by searching our site and using the "fully refundable" filter to narrow down the results.

What will the weather in Kosai be like during my visit?

August and July are typically the warmest months in Kosai when the average temp is 76°F. January and February are the coldest months when the average temperature is 46°F. July and June are the months with the most rain.

Why should I book my Kosai accommodation with Hotels.com?

There are lots of reasons to book your Kosai trip with us: our free cancellations on selected hotels* gives you flexibility, and with One Key™, our rewards program, you will be able to earn and use OneKeyCash™** on all eligible bookings such as hotels, car rentals, flights, vacation rentals and more on Hotels.com, Expedia and Vrbo.