Find hotels in Kosai from NT$944

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Dec 28 - Dec 29
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Jan 2 - Jan 4
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Our top choices for Kosai hotels

Terrace/patio
Tabist Kosai Hamanako no Yado

Tabist Kosai Hamanako no Yado

Tabist Kosai Hamanako no Yado
2.0 star property
Kosai
7.0 out of 10, Good, (45)
"Wonderful hotel. Very quiet. Our room was huge!"
United States
Sigrid
The price is NT$858
NT$944 total
Jan 4 - 2026/1/5
Tabist Kosai Hamanako no Yado
Public bath
Hotel Route Inn Hamanako

Hotel Route Inn Hamanako

Hotel Route Inn Hamanako
3.0 star property
Kosai
8.0 out of 10, Very Good, (187)
"very good"
Japan
たく
The price is NT$2,062
NT$2,269 total
Jan 27 - 2026/1/28
Hotel Route Inn Hamanako
Free daily continental breakfast
Tabist IWATA Station Hotel

Tabist IWATA Station Hotel

Tabist IWATA Station Hotel
3.5 star property
Iwata
7.2 out of 10, Good, (151)
"it's reasonable. "
Japan
Takatosi
The price is NT$1,460
NT$1,606 total
Dec 29 - Dec 30
Tabist IWATA Station Hotel
Exterior
Kuretake Inn Iwata

Kuretake Inn Iwata

Kuretake Inn Iwata
3.0 star property
Iwata
8.4 out of 10, Very Good, (65)
"The hotel and room were nice. The front desk staff was very helpful in securing us transportation for the following morning. "
United States
Wayne
The price is NT$3,285
NT$3,975 total
Jan 9 - 2026/1/10
Kuretake Inn Iwata
Interior
Hotel Route Inn Iwata Inter

Hotel Route Inn Iwata Inter

Hotel Route Inn Iwata Inter
3.0 star property
Iwata
8.4 out of 10, Very Good, (184)
"Next to a small shopping center with a super market and a couple of restaurants. Hotel is right next to the highway exit"
United States
Evan
The price is NT$2,573
NT$2,831 total
Jan 25 - 2026/1/26
Hotel Route Inn Iwata Inter
Lobby
Marugen

Marugen

Marugen
2.0 star property
Iwata
8.6 out of 10, Excellent, (23)
"近くの釣りスポットに行きやすかったです！"
Japan
mathui
Marugen
Property amenity
GREENITY IWATA

GREENITY IWATA

GREENITY IWATA
3.0 star property
Iwata
10.0 out of 10, Exceptional, (28)
"Everything about the hotel was amazing. From the room layout and appearance to the bar and staff. I will definitely be staying here again the next time I come to Japan."
United States
Jonathan
The price is NT$3,643
NT$4,007 total
Jan 27 - 2026/1/28
GREENITY IWATA
Free toiletries, hair dryer, slippers, electronic bidet
Tennomaru

Tennomaru

Tennomaru
4.0 star property
Kota
9.0 out of 10, Wonderful, (19)
"朝食付きのプラン 1人づつのお膳でした。出来立ての卵焼きや魚の揚げ物が着席後に提供されました。大変美味しかったです。"
Japan
MASAYUKI
The price is NT$5,335
NT$5,869 total
Jan 7 - 2026/1/8
Tennomaru
Suite | Bathroom | Shower, free toiletries, hair dryer, bathrobes
Kaze no Tani no Iori

Kaze no Tani no Iori

Kaze no Tani no Iori
4.0 star property
Kota
9.0 out of 10, Wonderful, (4)
"昨年から訪れ始めて今回が３度目です。何をとっても最高です。"
Japan
NORIAKI
The price is NT$15,934
NT$17,527 total
Jan 4 - 2026/1/5
Kaze no Tani no Iori
Spa
Hiranoya

Hiranoya

Hiranoya
4.0 star property
Gamagori
7.8 out of 10, Good, (116)
"Yosh"
United States
Eric
The price is NT$3,011
NT$3,373 total
Jan 5 - 2026/1/6
Hiranoya
Spa
Tenku Kaiyu no Yado Suehiro

Tenku Kaiyu no Yado Suehiro

Tenku Kaiyu no Yado Suehiro
3.5 star property
Nishiuracho
7.8 out of 10, Good, (54)
"Great dinner and breakfast. Enomous amount of food, including steak, lobster, fish, pork, rice, soup, dessert. Roof top onsen has a great view. The hotel is also walk distance to a famous sunset viewing spot. The room is a little bit old but clean and nice."
Saudi Arabia
Tyler Francis
Tenku Kaiyu no Yado Suehiro
Hot springs
Hotel Meizanso

Hotel Meizanso

Hotel Meizanso
3.5 star property
Gamagori
9.0 out of 10, Wonderful, (17)
"Wonderful hotel and room. Great view of ocean. Onsen was really nice. Japanese breakfasts and dinners outstanding. Staff so very nice and helpful. I hope to go back some day. "
United States
Sally
The price is NT$6,425
NT$7,127 total
Jan 4 - 2026/1/5
Hotel Meizanso
Chapel
Tabist Katahara Resort Gamagori

Tabist Katahara Resort Gamagori

Tabist Katahara Resort Gamagori
2.5 star property
Gamagori
6.6 out of 10, (22)
"Considering the price, it makes sense"
Japan
しんいち
The price is NT$1,460
NT$1,606 total
Jan 11 - 2026/1/12
Tabist Katahara Resort Gamagori
Exterior
Gamagori Classic Hotel

Gamagori Classic Hotel

Gamagori Classic Hotel
3.0 star property
Gamagori
8.0 out of 10, Very Good, (16)
"竹島へのロケーションがとても良い"
Japan
??
The price is NT$6,969
NT$8,432 total
Jan 12 - 2026/1/13
Gamagori Classic Hotel
Reception
Hotel Route Inn Shinshiro

Hotel Route Inn Shinshiro

Hotel Route Inn Shinshiro
3.0 star property
Shinshiro
9.2 out of 10, Wonderful, (473)
"Nice spa, with free breakfast and a coffee area lounge. "
United States
Dwight
The price is NT$2,409
NT$2,650 total
Jan 3 - 2026/1/4
Hotel Route Inn Shinshiro
Japanese-style room Twin, Smoking | In-room safe, bed sheets
Hotel Tatsuki

Hotel Tatsuki

Hotel Tatsuki
3.0 star property
Nishiuracho
6.0 out of 10, (2)
"色々な温泉宿に行きましたが、食事最高でした。食べきれない位、量と質。老舗とあって、建物は古いですが、 また行きたいです。"
Japan
ミナミ
The price is NT$9,637
NT$10,661 total
Jan 5 - 2026/1/6
Hotel Tatsuki
Courtyard
Henn na Hotel Lagunatenbosch

Henn na Hotel Lagunatenbosch

Henn na Hotel Lagunatenbosch
3.0 star property
Gamagori
8.2 out of 10, Very Good, (191)
"Starting from entrance our baby really love it because of realistic Dinosaur’s that welcoming every guest,I was also surprised of a spacious room & very clean room very relaxing, And my husband really loved the breakfast a lot of choices and they prepared it perfect. "
United States
Carina
The price is NT$4,248
NT$5,140 total
Jan 5 - 2026/1/6
Henn na Hotel Lagunatenbosch
Japanese-style Room with Lake View FB4 | Lake view
Hoshino Resorts KAI Enshu

Hoshino Resorts KAI Enshu

Hoshino Resorts KAI Enshu
4.0 star property
Nishi Ward
10.0 out of 10, Exceptional, (22)
"Beautiful resort with a nice Onsen."
United States
Janet
The price is NT$14,784
NT$17,948 total
Jan 6 - 2026/1/7
Hoshino Resorts KAI Enshu
Public bath
Gamagori Hotel

Gamagori Hotel

Gamagori Hotel
3.0 star property
Gamagori
6.8 out of 10, (122)
"Quiet comfortable"
United States
Mario
The price is NT$1,807
NT$2,048 total
Jan 5 - 2026/1/6
Gamagori Hotel
Exterior
Hamanako Wan Wan Paradise Hotel

Hamanako Wan Wan Paradise Hotel

Hamanako Wan Wan Paradise Hotel
3.0 star property
Nishi Ward
8.4 out of 10, Very Good, (45)
"スタッフの対応"
Japan
yukie
The price is NT$3,917
NT$4,369 total
Jan 6 - 2026/1/7
Hamanako Wan Wan Paradise Hotel
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.
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Stay near popular Kosai attractions

Arai Beach

Why not spend a carefree afternoon at Arai Beach during your travels in Kosai?
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Sakichi Toyoda Memorial House

You can learn about the history of Kosai with a stop at Sakichi Toyoda Memorial House. Stroll along the lakeside or discover the area's desert landscape.
See properties

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

Top Kosai Hotel Reviews

Dormy Inn EXPRESS Toyohashi Hot Spring

Dormy Inn EXPRESS Toyohashi Hot Spring

10/10 Excellent
"Room was great, beds were amazing, amenities excellent. Staff was good and hot springs was nice. Many freebies was totally worth staying here. "
Christopher 5-night trip
Posted 9 days ago
Dormy Inn EXPRESS Toyohashi Hot Spring

More cheap stays in Kosai

HOTEL LiVEMAX Hamamatsu-Ekimae

HOTEL LiVEMAX Hamamatsu-Ekimae

Kajimachi Plaza 6F Hamamatsu
The price is NT$966 per night from Jan 20 to Jan 21
NT$966
NT$1,169 total
Jan 20 - 2026/1/21
7/10 Good! (295 reviews)

Frequently asked questions

What's the best place for a stay in Kosai?
Based on our traveler data, Hotel Route Inn Hamanako is one of the top choices for your stay. This hotel is a short 7-minute walk from Lake Hamana, and it offers a restaurant and free parking. Tabist Kosai Hamanako no Yado is another good option for your stay. See all available top hotels, or vacation rentals in Kosai.
If I need to cancel my hotel reservation in Kosai, will I receive a refund?
Yes, you'll find most hotel bookings are fully refundable if cancelled before the accommodation's cancellation deadline, which often is within 24-48 hours of your check-in date. If you have a reservation that's non-refundable, you might still have the option to cancel and get a refund within 24 hours of your booking. Filter your search by fully refundable to find flexible hotel deals in Kosai.
Where can I learn more about changing or cancelling my trip to Kosai?
For more details about updating your trip to Kosai or cancelling it, head over to our customer service page.
What are some accommodations with pools in Kosai?
Grand Mercure Lake Hamana Resort & Spa: Hotel, 1-minute walk from Lake Hamana. Provides a children's pool, a seasonal outdoor pool, and spa services. View all hotels with pools in Kosai.
What's the best hotel for staying near Chubu Centrair International Airport (NGO)?
Centrair Hotel is a popular 3.5-star hotel featuring a restaurant and free WiFi. It's located a short 0.1 mi (0.2 km) from Chubu Centrair Intl. Airport. Other choices near the airport are Toyoko Inn Chubu International Airport No.2 and Four Points by Sheraton Nagoya, Chubu International Airport.
What's it like to stay in Kosai?
Visitors can enjoy all that Kosai has to offer including its beaches. In Kosai, there are 7 hotels and other accommodations to choose from. Find out more about Kosai.
What should I do while I'm visiting Kosai?
Natural beauty is on display at Arai Beach, Lake Hamana, and Arai Benten Beach. Additionally, you might want to add Sakichi Toyoda Memorial House to your itinerary. Check out what more to see and do in Expedia's Kosai guide.
What's the seasonal weather like in Kosai?
The hottest months are usually August and July with an average temp of 76°F, while the coldest months are January and February with an average of 46°F. The rainiest months in Kosai are July, June, September, and October, with each month seeing an average of 12 inches of rainfall.