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Check availability on Kosai Luxury Hotels

Tonight
Dec 8 - Dec 9
Tomorrow
Dec 9 - Dec 10
This weekend
Dec 12 - Dec 14
Next weekend
Dec 19 - Dec 21

Top Kosai Luxury Hotels

Free toiletries, hair dryer, slippers, electronic bidet
Tennomaru

Tennomaru

4.0 star property
Kota
8.8 out of 10, Excellent, (18)
"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 ￥20,726
￥22,799 total
Dec 9 - Dec 10
Tennomaru
Exterior
Hotel Associa Toyohashi

Hotel Associa Toyohashi

4.0 star property
Toyohashi
9.0 out of 10, Wonderful, (996)
"Staff were very kind !"
Canada
Yosuke
The price is ￥8,143
￥9,852 total
Dec 14 - Dec 15
Hotel Associa Toyohashi
Seasonal outdoor pool
Grand Mercure Lake Hamana Resort & Spa

Grand Mercure Lake Hamana Resort & Spa

4.0 star property
Nishi Ward
8.0 out of 10, Very Good, (599)
"Great location!"
United States
Bilal
The price is ￥9,669
￥12,000 total
Dec 23 - Dec 24
Grand Mercure Lake Hamana Resort & Spa
Exterior
Okura Act City Hotel Hamamatsu

Okura Act City Hotel Hamamatsu

4.5 star property
Naka Ward
9.0 out of 10, Wonderful, (1003)
"great breakfast."
United States
Owen
The price is ￥15,150
￥18,535 total
Jan 7 - Jan 8, 2026
Okura Act City Hotel Hamamatsu
Japanese-style Room with Lake View FB4 | Lake view
Hoshino Resorts KAI Enshu

Hoshino Resorts KAI Enshu

4.0 star property
Nishi Ward
10.0 out of 10, Exceptional, (21)
"Beautiful resort with a nice Onsen."
United States
Janet
Hoshino Resorts KAI Enshu
Suite | Bathroom | Shower, free toiletries, hair dryer, bathrobes
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 ￥79,364
￥87,300 total
Dec 8 - Dec 9
Kaze no Tani no Iori
Spa
Hiranoya

Hiranoya

4.0 star property
Gamagori
7.8 out of 10, Good, (116)
"Yosh"
United States
Eric
The price is ￥15,200
￥17,100 total
Dec 17 - Dec 18
Hiranoya
Exterior
villa vacances hamanako

villa vacances hamanako

5.0 star property
Nishi Ward
The price is ￥73,081
￥80,641 total
Dec 15 - Dec 16
villa vacances hamanako
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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Top Kosai Hotel Reviews

Hotel Associa Toyohashi

Hotel Associa Toyohashi

10/10 Excellent
"Good"
Hiromichi 3-night trip
Posted 1 month ago
Hotel Associa Toyohashi
Okura Act City Hotel Hamamatsu

Okura Act City Hotel Hamamatsu

10/10 Excellent
"Fastest elevator I've come across! My room was on the 39th floor..but it felt like i was on the 5th. Great view! The beds are firm. Just nice. I'll return. "
Eric 2-night trip
Posted 2 months ago
Okura Act City Hotel Hamamatsu

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Frequently asked questions

Are you looking for a luxury hotel for your stay in Kosai?
Expedia can help you arrange a flight to Mt. Fuji - Shizuoka Airport (FSZ) airport or Chubu Centrair Intl. Airport (NGO) airport, and then you can select from various places to stay that will deliver the luxury you'd like to find. Amenities are important when you plan a vacation, so we make it easy to get what you need to make your stay special. If you want an upscale hotel that has fine dining, a spa, or several swimming pools, Expedia can help you find the best luxury hotel experience that Kosai offers. Kosai has some interesting things to see and do including Arai Beach and Lake Hamana, so you might want to take in the local sights during your visit.
When can I expect good weather in Kosai?
Planning for the weather is an important factor for making your trip to Kosai a success, especially when you're splurging. 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.
What's there to see and do in Kosai?
Enjoy Kosai with a stop at Arai Beach, Lake Hamana, and Arai Benten Beach. If you have a little extra time during your trip, you might want to check out Sakichi Toyoda Memorial House and Hamanako Garden Park.