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KAI Hosino Resorts KAI Aso

KAI Hosino Resorts KAI Aso

Located 2 hours by train from Fukuoka Airport, KAI Aso is a hot spring ryokan inside Aso Kuju National Park, a Global Geopark in southern Japan. Guests stay in one of twelve villas—each with their own outdoor hot spring bath—dotted throughout the ryokan's 27,000 m² premises. All around spreads a stunning forest created through past volcanic activity.

  • 110 min. From Fukuoka
  • English-speaking staff
  • Best Rate Guarantee
  • Free Wi-fi
  • Outdoor bath
  • Half-board

What is KAI?

What is KAI?

Japan’s hidden luxuries—at your fingertips

KAI is a leading brand of luxury boutique hot spring ryokans. Every establishment offers a contemporary take on the traditional Japanese inn, providing unique, location-specific experiences—from exclusive activities to specialty suites—designed to immerse guests in the lavish world of Japanese regional craftsmanship.

Rooms

Guests stay in one of twelve villas distributed throughout an enormous 27,000 m2 area, surrounded by a vast forest. Each villa features a wood-and-stone design imbued with a warm natural touch, and includes an outdoor deck embedded with a private hot spring bath.

Room types (2)

KAI Amenities

100% flax yukata

These casual kimono have been meticulously woven to provide cooling in the summer and heat in the winter.

Wrapping cloth

In Japan, objects are traditionally carried around in a makeshift bag formed from a sheet of cloth. Guests are invited to use these cloths to carry their belongings around the premises.

Other amenities

Outdoor hot spring bath / indoor jet bath / TV / phone / electric kettle / fridge / safe box / hair dryer / toilet with bidet functions / air purifier with humidifying function

Dining

Meals feature a main course of sliced wagyu beef and vegetables flambéed in shochu on a lava plate, served with a condiment made by pickling tofu in miso paste. Other course dishes are prepared with flavorsome, locally sourced ingredients that are in season.

Dinner

Dinners consist of multi-course kaiseki meals that include visually pleasing dishes made with seasonal ingredients. Guests may choose between standard and special.

Breakfast

Breakfasts feature traditional regional cuisine such as long green onions seasoned with a miso vinegar, and rice cooked in a clay pot.

  • No Western meals are served, either at dinner or breakfast.
  • Standard prices include half board.
  • Allergy Information

Hot spring

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.

  • There are no shared bath halls. Guests are invited to enjoy the hot spring baths located in their individual villas.
  • Villas also feature indoor jet baths, though the water used in the indoor baths does not come from a hot spring.

Yuagari Lounge

Guests are invited to cool off on their room's terrace after a dip in the bath, with some complimentary sparkling water or other refreshing beverage inspired by Aso.

Massages

Same day reservations available at the front desk.

KAI Activities

Every KAI establishment offers a selection of free activities designed to introduce guests to Japan's regional cultures. Aso is home to Mt. Aso, an active volcano with one of the largest craters in the world. At KAI Aso, guests are invited to learn more about this volcano at the Caldera Bar, where bartenders serve drinks made with Aso's natural spring water and regale guests with stories about Mt. Aso.

Caldera Bar

Complementary shochu mojitos and non-alcoholic sodas made from dekopon oranges are served at the Caldera Bar, where each guest also receives their very own caldera modeling kit.

Caldera exercises

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.

Sightseeing

Directions

  • From Fukuoka area

  • From Kumamoto area

  • Free shuttle service

    Waiting area: Kurokawa Onsen Bus Stop (along Route 442) or outside the Kaze-no-ya tourist information center

    Pickups can be arranged for anytime between 15:00 and 17:00. Return trips can be arranged for anytime in the morning until noon.

    Free shuttle Reservations

    +81-50-3786-1144

    KAI Reservation Center
    9:00~20:00 GMT+9

    • Each party may arrange one free round trip per day during their stay during the designated hours.
    • For trips from Kurokawa Onsen, please book up to 1 day prior to your arrival by calling the KAI Reservation Line. Return trips can be arranged during check-in.

Information

Check-in 15:00
Check-out 12:00
Rooms 12
8 Western-style Rooms with outdoor bath / 4 Western-style Suites with outdoor bath
Parking 15
Facilities Restaurant / Travel Library / Shop

Travel Library

Every KAI establishment features a library consisting of books on the area's history, culture, crafts, and geography, as well as novels that spur a sense of adventure. Complimentary coffee is also served.

KAI Aso

628-6 Senomoto, Yutsubo, Kokonoe-machi,
Kusu-gun, Oita 879-4912