A stone lantern, a pine tree, and a coastal view.

Find 4 Star Hotels in Kosai from ￥10,740

  • Change your mind

    Book hotels with free cancellation

  • Treat yourself

    Sign in to save 10% or more on thousands of hotels
    Sign in

  • Be picky

    Search almost a million properties worldwide

Check availability on Kosai 4 Star Hotels

Tonight
Sep 16 - Sep 17
Tomorrow
Sep 17 - Sep 18
This weekend
Sep 18 - Sep 20
Next weekend
Sep 25 - Sep 27

Our top choices for Kosai 4-star hotels

A spacious lobby with a reception desk, a seating area, and a decorative plant centerpiece.
A hotel room with a bed, a desk with a computer, a TV, a chair, a sofa, and a view of the city at dusk.
A hotel hallway with doors on both sides, carpeted floor, and recessed lighting.
A modern kitchen with chefs preparing food, stainless steel cooking stations, and a decorative wall with a leaf pattern.

1. Hotel Associa Toyohashi

Hotel Associa Toyohashi
Toyohashi
United States
Sanae
￥11,310
￥13,685 total
Oct 5 - Oct 6
Hotel Associa Toyohashi
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 indoor venue with a curved seating arrangement, white columns, and large windows allowing natural light.
A spacious lobby with high ceilings, large golden columns, and a polished marble floor.
A spacious lobby with a grand piano, seating area, and a large decorative column.

2. Okura Act City Hotel Hamamatsu

Okura Act City Hotel Hamamatsu
Naka Ward
United States
Joseph
￥16,634
￥20,792 total
Sep 18 - Sep 19
Okura Act City Hotel Hamamatsu
A high-rise room with a city view, large windows, a sofa, and a table with a lamp.
A restaurant with tables set for dining, a chandelier, and a city view through large windows.
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.

3. Hotel Arc Riche Toyohashi

Hotel Arc Riche Toyohashi
Toyohashi
Canada
rogelio
￥13,418
￥14,760 total
Oct 12 - Oct 13
Hotel Arc Riche Toyohashi
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.

4. Grand Mercure Lake Hamana Resort & Spa

Grand Mercure Lake Hamana Resort & Spa
Nishi Ward
United Kingdom
Katarina
￥8,628
￥10,740 total
Oct 1 - Oct 2
Grand Mercure Lake Hamana Resort & Spa
A serene indoor pool with a wooden deck and stone accents, surrounded by wooden walls and potted plants.
A modern bathroom with a glass-enclosed shower, a built-in bench, and a view of the outdoors.
A modern interior with a sliding glass door leading to an outdoor area, a wooden wall with a built-in bench, and a ceiling with recessed lighting.
A traditional Japanese room with tatami flooring, a low table with a patterned runner, a sofa, a television, and a sliding door leading to a balcony with a view of the sea.

5. Hiranoya

Hiranoya
Gamagori
United States
Eric
￥17,028
￥19,031 total
Oct 15 - Oct 16
Hiranoya
A hot spring bath with a wooden bench and a bowl of green herbs.
A swimming pool with a wooden fence and trees in the background.
A dining area with a table set for two, a teapot, and a view of a body of water and mountains.
A modern hotel room with a large bed, a small table, and a view of a lake through shoji screens.

6. Hoshino Resorts KAI Enshu

Hoshino Resorts KAI Enshu
Nishi Ward
United States
Janet
Hoshino Resorts KAI Enshu
A panoramic view from a high vantage point, likely a hotel or resort, overlooking a city and lush greenery.
A modern indoor swimming pool with clear glass walls and a view of the surrounding landscape.
A modern outdoor hot tub area with a wooden deck, glass doors, and a view of the city.
A hotel room with two beds, a seating area, a large window with a city view, and a marble wall.

7. Tennomaru

Tennomaru
Kota
Japan
RIHO
￥26,464
￥29,607 total
Oct 4 - Oct 5
Tennomaru
A hot tub area with a wooden deck, a seating area, and a view of trees.
A hot tub with a view of a cityscape at dusk.
A cozy room with a large window overlooking a cityscape at dusk. There are wooden chairs and a small table with a candle.
A spacious indoor area with wooden flooring, a sofa with yellow cushions, wooden chairs, and a bookshelf.

8. Kaze no Tani no Iori

Kaze no Tani no Iori
Kota
Japan
mitsuyo
￥79,364
￥87,300 total
Sep 16 - Sep 17
Kaze no Tani no Iori
A traditional Japanese onsen with wooden beams, a central hot spring, and wooden stools.
A traditional Japanese room with tatami flooring, a low table with cushions, two beds, and a view of a body of water.
A tatami mat room with a low table, chairs, and a view of a body of water.
A stone hot tub and a wooden deck with a view of trees and a building in the background.

9. Sansuikan-Kinryu

Sansuikan-Kinryu
Nishi Ward
Sansuikan-Kinryu
Save an average of 15% on thousands of hotels when you're signed in

Explore similar 5-star hotels

Many 5-star hotels have the same amenities as 4-star hotels. See all 5-star hotels in Kosai.
Hamamatsu Marriott Hotel

Hamamatsu Marriott Hotel

1-3-1 Higashi Iba Hamamatsu Shizuoka Prefecture
￥13,501
￥16,336 total
Oct 4 - Oct 5
9/10 Wonderful! (26 reviews)
Hamamatsu Marriott Hotel
villa vacances hamanako

villa vacances hamanako

102 Kyowacho Hamamatsu Shizuoka
￥70,044
￥77,172 total
Sep 24 - Sep 25
villa vacances hamanako
Still don't see what you're looking for?
See all properties in Kosai.
You can also use these popular filters to refine your search.
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Learn more about Kosai

Between the golden shores of Arai Benten Beach and the tranquil waters of Lake Hamana, visitors find perfect spots for swimming and watersports. Explore the historic Sakichi Toyoda Memorial House before visiting ancient Ogaji Temple where locals still come to pray beneath centuries-old trees.

See all hotels in Kosai
A stone lantern, a pine tree, and a coastal view.

Top Kosai Hotel Reviews

Explore a world of travel with Expedia