Find Hotels with a Pool in Kosai

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Check availability on Kosai Hotels with a Pool

Our top choices for Kosai hotels with a pool

Exterior
Grand Mercure Lake Hamana Resort & Spa

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, (600)
"Great location!"
United States
Bilal
The price is ₩93,273
₩115,705 total
Jan 15 - Jan 16, 2026
Grand Mercure Lake Hamana Resort & Spa
Indoor pool
Hotel Crown Palais Hamamatsu

Hotel Crown Palais Hamamatsu

Hotel Crown Palais Hamamatsu
3.5 star property
Naka Ward
8.0 out of 10, Very Good, (288)
"Great location, nice and friendly staff, clean room."
Australia
Lazarela
The price is ₩73,476
₩88,907 total
Jan 15 - Jan 16, 2026
Hotel Crown Palais Hamamatsu
Exterior
Ryokan Kinsui

Ryokan Kinsui

Ryokan Kinsui
3.0 star property
Kita Ward
8.0 out of 10, Very Good, (1)
The price is ₩568,434
₩625,277 total
Dec 20 - Dec 21
Ryokan Kinsui
Lobby
Yunokaze HAZU

Yunokaze HAZU

Yunokaze HAZU
3.0 star property
Shinshiro
7.8 out of 10, Good, (18)
"夫婦＋小さい子供2人の4人での宿泊でしたが、夜、朝ご飯共に子供にも配慮してくださった食事を提供いただいたり、時間の変更にも対応してくださったり、とても気持ちよく過ごせました。5歳の子も楽しんでくれたようで、次はもう少し早く来ようねと、再訪をを希望しておりました。 建物は確かに古いですが、それが温泉旅館、的なところもありますし、水回りもそこまで気になりませんでした。時間の関係で今回は露天風呂に入らなかったので、次はそちらも楽しめたら良いなと思いました。 ありがとうございました。"
Japan
HITOMI
Yunokaze HAZU
Seasonal outdoor pool
Hotel Listel Hamanako

Hotel Listel Hamanako

Hotel Listel Hamanako
3.0 star property
Kita Ward
6.0 out of 10, (18)
"汚い！ 中国人ご多すぎ、お風呂のマナーが汚すぎて入れない。 仕方ないけど、館内は古い"
Japan
Anonymous traveler
The price is ₩192,923
₩215,057 total
Dec 22 - Dec 23
Hotel Listel 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

Grand Mercure Lake Hamana Resort & Spa

Grand Mercure Lake Hamana Resort & Spa

10/10 Excellent
"Great location!"
Bilal 1-night trip
Posted 2 months ago
Grand Mercure Lake Hamana Resort & Spa
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

What are some accommodations with pools in Kosai?
Hotel Route Inn Hamanako: Hotel, 1-minute walk from Lake Hamana. Features a children's pool, a seasonal outdoor pool, and spa services.
What is there to see and do in Kosai?
The picturesque setting of Arai Beach and Lake Hamana showcase the area's natural beauty. Discover sights such as Arai Benten Beach and Sakichi Toyoda Memorial House during your stay.
When is the best time to book a hotel with a pool in Kosai?
You may want to consider an accommodation that has an outdoor pool if you plan to visit Kosai in the hottest months of August, July, or September when the average temp is 76°F. Lodging with an indoor pool may be what you want if you come to town during the coldest months of January, February, or December when the average temp is 46°F.