Reference price as of September 19, 2026 (stay date 2026-10-10). Please check the booking site for actual rates.
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forumWhat families say
Families praise the ASONIWA kids' park and the Kids Terrace Rooms, renovated in October 2025, and rate the setting with views of the Aso Gogaku peaks, the beauty water (silica-bearing onsen) and the kids' corner at the breakfast buffet, where Kumamon in a chef's outfit greets you.
Kids Facilities
ASONIWA Kids' Park (opened October 24, 2025)
ASONIWA Kids' Park (opened October 24, 2025)
A hands-on kids' park where children learn about the nature and the diversity of living things in Aso while they play. It is laid out as four age-based spaces: an active area (ages 4 to 7, with a slide, foam Jenga and more), a pretend-play area (ages 1 to 6), a baby area (under age 1) and a picture book corner. Original touches include the hotel's own telephone-based mission experience ASO PHONE, where children visit four kinds of handsets - a ball handset, a block handset, a button handset and a radio handset - to collect secret words, as well as a chair that grows a tail when you sit on it.
- •Hours: 2 p.m. to 10 p.m. and 7 a.m. to 10 a.m.
- •For ages 0 to 12
- •Free of charge, for staying guests only
- •A guardian (a supporting family member and an adult) must accompany children; no staff are stationed there
- •Eating and drinking are not allowed inside the park
- •Entry and use may be restricted when it is busy
Kids Terrace Room / Kumamon Room
Kids Terrace Room / Kumamon Room
The Kids Terrace Room is a 63 sq m room for up to 6 guests, themed on the outdoors of the forest, with a terrace leading directly onto the lawn area for outdoor play. The Kumamon Room, where Kumamon in a chef's outfit greets you, comes in three types: Fours, Triple and Queen.
- checkKids Terrace Room (63 sq m / up to 6 guests / with terrace)
- checkKumamon Room Fours
- checkKumamon Room Triple
- checkKumamon Room Queen
- checkDeluxe Room with Open-Air Bath (with sauna)
Sensuikyo Onsen communal bath, open-air bath and sauna
Sensuikyo Onsen communal bath, open-air bath and sauna
Natural hot spring water from the hotel's own source, containing silica (metasilicic acid) at 142.0 mg/L and meeting the standard for "beauty water." The renovated open-air baths alternate between men and women, so you can enjoy the Western-style and Japanese-style baths on alternating days. There is also a dry sauna, a mist sauna, a natural onsen mud pack, a shampoo bar where you can choose from several brands, and a space to cool down and unwind.
- •Hours: 5 a.m. to 9 a.m. and 3 p.m. to midnight
- •The open-air baths alternate between men and women, with the Western-style and Japanese-style baths swapping daily
- •Day-use bathing: 3 p.m. to 9 p.m. (reception closes at 8 p.m.); 1,000 yen for junior high school age and above, 500 yen for elementary school children
- •Whether children who are not yet out of diapers may bathe, and the age at which children must use the bath for their own gender, are not stated on the official website, the Rakuten details page or other booking sites, so checking with the hotel before you visit is recommended
Breakfast kids' corner (Kumamon in a chef's outfit)
Breakfast kids' corner (Kumamon in a chef's outfit)
A buffet built around the flavors of Kumamoto, starting with akaushi beef. At the kids' corner, Kumamon in a chef's outfit greets you, and there is a good selection of dishes for children.
- •For some items on the menu, allergy-friendly dishes can be provided on request. Please contact the hotel when you book.
Yukata and bedding for young children available to borrow
Yukata and bedding for young children available to borrow
Yukata and bedding for young children can also be provided.
Categories
Overview
Kamenoi Hotel Aso is a resort hotel in Sensuikyo Onsen in the Miyaji area of Aso. A renovation in October 2025 added ASONIWA, a hands-on kids' park with play equipment themed on the grasslands, creatures and landforms of Aso, along with a picture book corner, puzzle play and the ASO PHONE; staying guests can use it free of charge. The Kids Terrace Room, styled around the outdoors of the forest, is another draw, as is the onsen area, whose "beauty water" contains 142 mg/L of silica and which has a dry sauna, a mist sauna and a mud pack.
Kamenoi Hotel Aso sits in Sensuikyo Onsen in the Miyaji area of Aso; it is a separate property from its sister hotel, Kamenoi Hotel Aso Park Resort. On October 24, 2025, the kids' park ASONIWA and the Kids Terrace Room, themed on the outdoors of the forest, reopened after renovation.
Play Areas and Kids' Spaces
ASONIWA is a free facility for staying guests only. Alongside play equipment themed on the grasslands, creatures and landforms of Aso, it holds the hotel's original telephone-based experience ASO PHONE, a picture book corner, miniature play and puzzle play, laid out as four rooms that children aged 0 to 12 can enjoy. Hours are 2 p.m. to 10 p.m. and 7 a.m. to 10 a.m.
Baths and Onsen
The onsen is natural hot spring water containing silica (metasilicic acid at 142.0 mg/L), meeting the standard for "beauty water," and it has a renovated open-air bath, along with a dry sauna, a mist sauna and a mud pack. Guest rooms include themed rooms such as the Kids Terrace Room built around ASONIWA (63 sq m, for up to 6 guests) and the Kumamon Room, which comes in Fours, Triple and Queen types.
Access & Information
| location_onAddress | 5936 Miyaji, Ichinomiya-machi, Aso, Kumamoto 869-2612 |
|---|---|
| directions_carAccess | A 5-minute drive from Miyaji Station on the JR Hohi Main Line. About 40 minutes from Kumamoto IC on the Kyushu Expressway via the Route 57 Futae-no-Toge Tunnel, and about 40 minutes from Kumamoto Airport. |
| trainNearest station | Miyaji Station |
| local_parkingParking | Parking for 156 cars, free of charge. |
| callPhone | +81-967-22-1122 |
| paymentsCards | VISA, JCB, American Express, Diners Club, UC, Mastercard, Discover |
| languageOfficial site | https://kamenoi-hotels.com/aso/open_in_new |
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Reference price as of September 19, 2026 (stay date 2026-10-10). Please check the booking site for actual rates.
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Frequently Asked Questions
What ages is Kamenoi Hotel Aso best suited to?
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It has facilities that work especially well for babies and toddlers (ages 0 to 2) and children aged 3 and over. There is no age limit, and families with children of any age can stay.
Is there parking at Kamenoi Hotel Aso?
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Parking: Parking for 156 cars, free of charge.
How do you get to Kamenoi Hotel Aso?
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A 5-minute drive from Miyaji Station on the JR Hohi Main Line. About 40 minutes from Kumamoto IC on the Kyushu Expressway via the Route 57 Futae-no-Toge Tunnel, and about 40 minutes from Kumamoto Airport.
Can we let our children play in the kids' park or the playroom on their own?
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No. No staff are stationed at the kids' park, so children must use it together with a guardian - a supporting family member and an adult.
Can the hotel accommodate a child with a food allergy?
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Allergy-friendly dishes can be provided for some items on the menu. Complete removal of ingredients contained in seasonings is difficult, however, and requests cannot be made on the day or based on food preferences, so you need to inquire in advance when you book.
Can we eat in our room with our children?
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No. Meals are served in the restaurant or the banquet hall, and in-room dining is not available.
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Information on this page was compiled by directly consulting Official website, Rakuten Travel, Ikyu.com (a Japanese booking site), Jalan (last verified: August 2026). Prices, availability and seasonal operations change. Please check each booking site for the latest information.
We take care to keep information accurate, but always confirm the latest details on the hotel's official site and booking sites before you book or visit.
For the people who run this property: corrections and updates go through For Hotels & Partners, and the "Listed on Kids Stay" badge for your website is on Listing badge. Both are free.









