Senomoto Onsen, Aso Kuju National Park, Japan

Kai Aso is a hot spring ryokan inside Aso Kuju National Park, a Global Geopark in southern Japan. Great view, quiet forest, rooms with private hot spring bath and creative Kaiseki dinner await you.

so 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.

Located 2 hours by train from Fukuoka Airport. From Fukuoka Airport or JR Hakata station, take a Limousine bus to Kurokawa Onsen Bus Stop, then take a free shuttle to KAI Aso.

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.
Western Style SUite with Outdoor Bath

This room is spacious for 4 people with Japanese style room with Ryukyu tatami mattered. Outdoor bath, inner bath with jacuzzi, living room of flooring is also equipped.

Capacity: 1 – 4 people
Size: 78 sqm

Western Style Honeymoon Suite with Outdoor Bath

Room for 2 people consisting of open-air bath, in-bath, living room and bedroom. Space where you can sense the “warmth of wood and stone” by design by Mr. Ichiro Sato. The height of the ceiling is as high as 4 m, it is spacious construction.

Capacity: 1 – 2 people
Size: 63 sqm


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.

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

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


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.

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.

Different rates for using
  • 1 bedroom
  • 2 bedrooms
  • 3 bedrooms
  • 4 bedrooms
  • 5 bedrooms
  • 6 bedrooms
  • 7 bedrooms
  • 8 bedrooms
  • 9 bedrooms
  • 9+ bedrooms


$720 $576/night

Rates vary according to seasonality. Contact us to discuss your holiday needs.


Bali, Indonesia
A trip to Bali can be filled with culture, nature, art, the spiritual or, even better, all of these. Apart from the wealth of Bali attractions, from the spectacular beaches of Kuta, Nusa Dua and Seminyak, or Ubud’s cultural heart and picturesque terraced rice fields, the northeastern coastal towns and Lombok Island are hidden gems awaiting discovery.
Bali is an Indonesian island known for its forested volcanic mountains, iconic rice paddies, beaches and coral reefs. The island is home to religious sites such as cliffside Uluwatu Temple. To the south, the beachside city of Kuta has lively bars, while Seminyak, Sanur and Nusa Dua are popular resort towns. The island is also known for its yoga and meditation retreats.
Staying with us
  • Travel concierge: We listen to help you plan
  • For big villas and chalets, special rates for smaller groups (reduced occupancy)
  • Limited time deals, exclusive perks
  • The best rates, guaranteed
Planning your luxury holiday, we are with you every step along the way.
If the villa of your choice is already booked, our team is happy to suggest equivalent alternatives and take care of the details. You can expect your vacation to be personalized to suit your tastes.
Private, insured, direct airport transfers to and from the villa can be arranged. A villa manager will meet and greet you at the airport ensuring your transfer to the villa is smooth and effortless.
Private tours and boat hire can also be arranged in advance. We will handle the arrangements to collect and return you to your villa after the event. Why not enjoy a fabulous day out and explore the surrounding islands and national marine park on a luxury speed boat?
Book a car with us and have it waiting at your villa when you arrive, we have a wide range of vehicles from a 2 seat Suzuki Jeep to a 7 seat Toyota Fortuner. Price includes comprehensive insurance, unlimited miles, collection and delivery, and optional baby and booster seats.
Prior to your arrival we will send you a food and wine shopping list allowing us to stock the villa with your favorite foods and beverages.
Once on site, your resident villa staff will ensure the villa is kept clean and tidy. Your villa manager is available to cater to guests’ specific needs and can help organize island activities, massage and spa treatments, as well as helping communicate requests to the Thai chef and dealing with any matter arising at the villa. Bed linen is changed every third day and towels are changed as necessary. Pool towels are provided and replenished as deemed necessary.
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