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Water, Fire, and the Light of the Stars

KAI AsoKyushu / Oita

Hot Springs and Horseback Riding in the GrasslandsHoshino Resorts KAI Aso
The KAI Aso resort is located in southern Japan in the Oita Prefecture, where Senomoto hot spring water flows. It is situated in the Oita Prefecture's national park. Kusasenrihama is situated in a grassy area where you can see Mother Nature. The area is also close to Ikeyama Suwon, an area worth exploring. Furthermore, there are numerous tourist attractions in and around Aso Shrine and Nabekataki Park, so you will be able to experience a variety of things during your stay.
You can stay in a place surrounded by nature in a facility with 12 rooms and plenty of land to yourself. It is decorated with comfortable colors and lighting and is lit in a way that is conducive to relaxation. The unique bedding is also very popular with guests due to its cozy and soft nature. You can access the terrace open-air bath from the bedroom, living room, and bathroom at any time, allowing you to enjoy hot springs at any time.
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    Rooms feature decks with outdoor hot spring baths that allow guests to enjoy a soak whenever they wish. Every deck presents a panoramic view of Aso's vibrant natural scenery, which spreads just beyond the decks.
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    Held each morning on the ryokan observation terrace, these breath exercises invigorate guests with Aso's mountain air and, on clear days, allow for spectacular views of the Aso Mountains.
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    Horseback riding program renowned the world over, where you can enjoy the beauty of nature with horses that vary from season to season.
  • The address of Hoshino Resorts KAI Aso is [ 1628-6 Senomoto, Yutsubo, Kokonoe-machi, Kusu-gun, Oita,Japan ].
    It takes approximately 1 hour 30minutes by car from Aso Kumamoto Airport. It takes approximately 1 hour 50minutes by car from Fukuoka Airport.
    Hoshino Resorts
    KAI Aso
    Japan, 879-4912 Oita, Kusu District, Kokonoe, Yutsubo, 628-6
      Things to note
      Find out more about your booking.
      Please be advised that following information is for reference. All the listed information can be subject to the stay’s current status.
      • Things to note
      • Cancellation policy
      Room rate policy

      The room rates vary depending on the seasons. Please select a date through the calendar and check the price.

      Room Occupancy (STD/MAX)
      Western-style Room with Outdoor Bath RA2 2/2
      Western-style Suite with Outdoor Bath RB4 4/4
      • Reservation is not confirmed real time, and we inform whether reservation is possible in less than 48 business hours.
      • Payment will not be processed immediately upon reservation request, it will be approved when reservation is confirmed.
      • Breakfast and dinner are included.
      • Exceeding the maximum number of occupants is prohibited.


      Age Price Service inclusions
      7 - 11 70% of the adult price Breakfast and dinner included
      4 - 6 50% of the adult price Breakfast and dinner included
      0 - 3 Free Extra bedding and meals are not included

      - Hoshino KAI discounts below are not applicable to all reservations.
      - Consecutive night discounts and early bird discounts may vary depending on the season.
      - We will guide you separately, if the discount is applicable.


      Early Bird Discount Rate
      60 days 20% off
      90 days 25% off
      Cancellation policy

      Please refer to the refund policy below.
      Refund policy may be change depending on the accommodation plan.
      Refunds may not be available for consecutive nights and early bird discounts.

      24 days before check-in No cancellation fee will be charged.
      23 - 6 days before check-in 90% of the total price of the reservation will be chared.
      5 days before check-in or no-show The total price of the reservation will be charged.

      When early bird discount benefits are applied

      After the reservation is confirmed Non-changeable and non-refundable
      • All cancellations and refunds are based on the date of written notification to the stay.
      • It takes at least 2 business days or more for written notice.
      • If you cancel a confirmed reservation within the penalty period, you will be refunded excluding a 4% fee for tax and transaction expenses.
      • Resale, hand-over, transfer, or exchange of stay vouchers is prohibited.
      Things to note
      • The service contents and information provided by STAYFOLIO may vary depending on the resort circumstances.
      • About 20 local districts in Japan collect hotel accommodation tax for the purpose of promoting tourism. An accommodation tax of up to 1,000 JPY per person and night may be additionally charged upon check-in.
      • A valid government issued photo ID (passport) is required during check-in.
      • Rooms are assigned randomly. It is not possible to designate specific rooms.
      • 5 rooms above will be quoted under group rate and rate will change.
      • Compensation fee will be charged in case of loss or damage to bedding, equipment, facilities etc.
      • Commercial photography and video shooting without prior agreement are not allowed.
      • Restaurant
        It is a restaurant full of openness with a view of Mt. Aso(阿蘇五岳). Enjoy Kaiseki cooked with plenty of seasonal ingredients while gazing at the changing scenery.
      • Bar
        KAI Aso's original cocktail "Shochu Mojito" and a non-alcoholic drink "Decopont Soda" containing local citrus Decopon are provided free of charge. You can also experience the process of creating a caldera with a kit prepared for each person.
      • Onsen
        Enjoy the hot spring bath on the terrace of every guest room. You can feel as if you are at one with nature, in a forest surrounded by lush greenery.
      • Library
        You can enjoy delicious coffee along with books on local history, culture, nature and crafts.
      • Shop
        You can purchase a variety of souvenirs, including local traditional crafts and sweets.