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2 adults, 1 room
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Hoshino Resorts KAI Aso 






€ --per night
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Top reasons for booking

Great view
Most user reviews comment positively on the view from their room

Nature retreat
Set within a mountain landscape, this property offers direct access to hiking trails and panoramic valley views from its grounds.
Popular facilities
Hot spring
Coffee shop
Restaurant
WiFi
Exploring the area
23
Western-Style Suite with Outdoor Bath RB4
2 beds
25
Western-Style Room with Outdoor Bath RA2
2 beds
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Reviews
Read all reviews
4.7/5.0
Fantastic
35 reviewsLocation
0.0
Services offered
4.8
Cleanliness
4.7
Atmosphere & facilities
4.5
From real reviews, powered by AI
All
4.5+
3.0+
Reviewed: 9 Feb 2026
5.0/5.0
FantasticStayed with partner
非常大的房間空間
Reviewed: 26 Oct 2025
4.0/5.0
GreatStayed with partner · For leisure
A nice traditional Japanese ryokan but the condition of the room and quality of dinner were not up to the standard of similarly priced properties that we have stayed in.
Reviewed: 10 Jan 2025
5.0/5.0
FantasticStayed with partner
Superbe lieu au milieu de la nature.
Maison avec bain chaud sur la terrasse.
Restaurant et service succulents.
Resort de haut de gamme.
Reviewed: 14 Dec 2024
1.0/5.0
Below averageStayed with friends · For leisure
We are a party that booked 3 rooms at Kai Aso for 2 nights.
Whilst the English speaking reception staff were always helpful, unfortunately one room, No 11, was totally inadequate & substandard. Room floor heating was not working both nights. Whilst the room temp showed 30C, it felt like 20 max 23C. It was very cold both nights, outside temp dropped to 0C both nights. For the first night the staff provided a heater and the second night another one was added. Third day morning, the heating for water supply did not work and staff thankfully managed to restore heating to the water supply.
Second room 13, wash basins in the bathroom were clogged with very poor water drainage. Whilst the floor heating worked in 2nd room, the bathroom was also cold and not 30C as indicated, more likely 23C which is not comfortable.
I lodged a strong complaint but all the manager in charge, Mr. Sayumi Ueda offered nothing except perfunctory words of apology and contrition.
Hoshine group markets itself, many of their hotels/ryokans as 5 star properties, which I think includes Kai Aso, as we paid an expensive rate to stay. This was our third stay in the property and whilst the 1st two were good, the recent stay left a very unpleasant experience.
High end international hotel chain will normally compensate in monetary form or credit for a future stay provided. Udea said NONE can be offered, so tarnishing Hoshino's reputation. Is their management aware of their managerial response? Be warned!
Reviewed: 21 Sep 2024
4.0/5.0
GreatStayed with partner
房間設計不錯,但開始有啲舊,沒有usb插頭,未有提供附加插蘇,日本高級酒店來說員工親切招待未有高水平
Reviewed: 18 Sep 2024
5.0/5.0
FantasticStayed with partner
숲속에 홀로 있는 듯한 느낌.. 온천과 요가로 보내는 저녁시간이 너무나 평화롭습니다.
Reviewed: 17 Oct 2023
5.0/5.0
FantasticFor leisure
The Staff was incredibly attentive, patient and accommodating. The room was very spacious and clean, and the patio hot bath was excellent. The beds and pillows were super comfortable- the perfect balance of soft yet just firm enough.
Reviewed: 25 Apr 2023
5.0/5.0
FantasticStayed with partner · For leisure
Lovely stay ..Bed room can be slightly warmer on cool nights
Reviewed: 17 Dec 2019
5.0/5.0
FantasticStayed with partner · For leisure
Privacy, beautiful view, excellent staff service, good food
Reviewed: 29 Aug 2018
5.0/5.0
Fantastic We love the environment and that private onsen, we also like the lay out but don't like those furniture





