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亀の井ホテル 阿蘇 パークリゾート イメージ

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Rated 3.98 overall based on 1,393 reviews on Rakuten Travel. Families praise the wealth of facilities to enjoy together, including the year-round indoor heated pool, the panoramic-view onsen baths, the Ninja and Kumamon themed rooms, and the buffet with about 90 dishes.

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Kids Facilities

Year-round indoor heated pool

Ages 0-12Indoor

An indoor heated pool with a lazy river, jacuzzi, and more, where you can swim in a swimsuit regardless of weather or season. It is free for hotel guests to use, and rental of swimwear, swim diapers, and floats is also available.

Indoor kids' park

Ages 0-12Indoor

An indoor kids' park offering play suited to each age group. It's a safe play space for young children to move their bodies even on rainy days. Guests can also enjoy a game and amusement corner and table tennis.

Ninja Family Room and Kumamon Rooms

Ages 0-12Indoor

The Ninja Family Room, renovated in April 2026, is a room that feels like an adventure, with a hidden room behind a trick door. The South Wing also has the Kumamon Maisonette and Kumamon Twin, rooms decorated with Kumamon throughout.

Panoramic-view onsen, communal bath, and private-hire baths

Ages 0-12Indoor

The communal bath, fed by a natural onsen (source name: Tsukasa Aso Onsen), has an open-air bath, a sauna, and a spacious indoor bath, and the 3rd floor of the main building has four types of panoramic-view onsen baths overlooking the Aso Gogaku peaks. Three types of private-hire bath (rock bath, tile bath, and a wheelchair-accessible bath) are also available for families to use just among themselves.

Buffet restaurant with kids' corner and baby food

Ages 0-12Indoor

The buffet restaurant 'ASO BOLD KITCHEN', with about 90 dishes, offers Aso specialties from a live kitchen as well as a kids' corner where children can choose their own food. Baby food is also served at the buffet restaurant (advance notice is recommended).

Free rental of baby items

Ages 0-12

Baby items such as a crib, diaper pail, bath chair, and bed guard are lent free of charge at the front desk (limited quantities; extension 9). A humidifier is also available for rental.

toysSee photos & full detailsopen_in_new

Overview

A large resort hotel in Aso, Kumamoto Prefecture, with views of the Aso Gogaku peaks. Families can play to their heart's content with a year-round indoor heated pool (lazy river, jacuzzi, and more), an indoor kids' park, and panoramic-view onsen baths with an open-air bath and private-hire baths overlooking the grand Aso scenery. Concept rooms such as the Ninja Family Room and Kumamon Rooms are also popular. Dining is a buffet of about 90 dishes with a kids' corner, and baby food is available along with free rental of items such as a crib, diaper pail, and bath chair, so families traveling with a baby can stay with peace of mind.

Kamenoi Hotel Aso Park Resort stands inside one of the world's largest calderas in Aso, Kumamoto Prefecture, and is a large resort hotel with panoramic views of the Aso Gogaku peaks (operated by Iconia Hospitality / Kamenoi Hotel). It is well equipped with facilities the whole family can enjoy to the fullest, including an indoor heated pool, a kids' park, and themed rooms.

Year-round indoor heated pool

There is an indoor heated pool where you can swim regardless of the weather or season, with a variety of warm-water facilities including a lazy river and a jacuzzi. It is free for hotel guests to use, and rental of swimwear, swim diapers, and floats is also available. There is no age limit, and toddlers and babies can use the pool as long as they wear a swim diaper (children not yet potty-trained are fine in a swim diaper). There is no lifeguard, so a guardian must accompany children when using the pool.

Indoor kids' park and play facilities

The indoor kids' park offers play suited to each age group, so children can move their bodies and play even on rainy days. Guests can also enjoy a game and amusement corner and table tennis.

Concept rooms

The Ninja Family Room reopened after renovation in the East Wing in April 2026. It is full of playful touches to spark a child's imagination, including a hidden room behind a trick door. The South Wing also has the Kumamon Maisonette and Kumamon Twin, rooms decorated with Kumamon throughout. There is also a wide range of other room types, including a 16-tatami-mat Japanese-style room with a cypress (hinoki) bath, a Deluxe Twin with a view bath, and Japanese-Western style rooms.

Onsen and baths

The communal bath, fed by a natural onsen (source name: Tsukasa Aso Onsen), has an open-air bath, a sauna, and a spacious indoor bath. On the 3rd floor of the main building there are four types of panoramic-view onsen baths overlooking the Aso Gogaku peaks (Komezuka, Gogaku, Sensuikyo, and Gairin). The women's communal bath is fitted with ReFa shower heads. There are also three types of private-hire bath - the rock bath 'Hoshi', the tile bath 'Yume', and the wheelchair-accessible bath 'Iyashi' (JPY 2,000 for 50 minutes for hotel guests; reservation required) - so families can enjoy the onsen just among themselves.

Dining and consideration for families with babies

Meals are served at the buffet restaurant 'ASO BOLD KITCHEN', which offers about 90 dishes, including Aso specialties from a live kitchen and a kids' corner where children can choose their own food. Baby food is also available (advance notice is recommended). Baby items such as a crib, diaper pail, bath chair, and bed guard can be borrowed free of charge at the front desk (limited quantities). Note that in-room dining is not offered for either breakfast or dinner. Checkout can be extended for an additional fee of JPY 2,000 (tax included) per room per hour.

Access & Information

location_onAddress1230 Kurokawa, Aso-shi, Kumamoto 869-2225
directions_carAccessAbout 5 minutes by free shuttle from Aso Station (JR Hohi Main Line) (about 15 minutes on foot). About 40 minutes by taxi from Aso Kumamoto Airport, and about 55 minutes from Kumamoto IC via National Route 57.
trainNearest stationAso Station (JR Hohi Main Line)
local_parkingParkingFree parking for 200 cars (JPY 1,000 for buses and trucks of 2t-long class or larger).
callPhone+81-967-34-0811
paymentsCardsVISA, JCB, American Express, Diners Club, UC, DC, NICOS, OMC
languageOfficial sitehttps://kamenoi-hotels.com/asoparkresort/open_in_new
From ¥64,900/ per night (2 adults)

Reference price as of August 28, 2026 (stay date 2026-09-19). Please check the booking site for actual rates.

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Reference, 1 person¥25,600+Varies by season
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Frequently Asked Questions

Is there an age limit for the indoor pool?

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No. There is no age limit, so toddlers and babies can use the pool as long as they wear a swim diaper (swim diapers are sold and available for rental). Since there is no lifeguard, a guardian must accompany children at all times.

What kind of baths and onsen does the hotel have?

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The communal bath, fed by a natural onsen, has an open-air bath, a sauna, and a spacious indoor bath, plus four panoramic-view onsen baths on the 3rd floor of the main building. There are also three types of private-hire bath (a rock bath, a tile bath, and a wheelchair-accessible bath), available for JPY 2,000 per 50 minutes for hotel guests with a reservation required.

Can we borrow a crib or other baby items?

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Yes. A crib, diaper pail, bath chair, bed guard, and humidifier can all be borrowed free of charge at the front desk, though quantities are limited. Baby soap, baby wipes, baby nail clippers, and a cooling pack are also provided.

Is baby food available, or can we bring our own?

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Baby food is provided, but only at the buffet restaurant 'ASO BOLD KITCHEN' (advance notice is recommended). Bringing your own baby food is also fine if you let the hotel know in advance. Note that in-room dining is not offered for breakfast or dinner.

How do we get to the hotel, and is parking free?

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From Aso Station on the JR Hohi Main Line, it's about 5 minutes by free shuttle (about 15 minutes on foot). It's about 40 minutes by taxi from Aso Kumamoto Airport, and about 55 minutes from Kumamoto IC via National Route 57. Parking is free for 200 cars (JPY 1,000 for buses and trucks of 2t-long class or larger).

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Information on this page was compiled by directly consulting Official website, Rakuten Travel, 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.

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