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KAI Hoshino Resorts KAI Matsumoto

KAI Hoshino Resorts KAI Matsumoto

Located 2.5 hours by train from Tokyo, KAI Matsumoto is a hot spring ryokan fed by the waters of Asama Hot Spring, which was popular with feudal lords who once occupied nearby Matsumoto Castle. Reflecting Matsumoto's thriving music scene, concerts are held nightly in the ryokan lobby, where regional wines are also served.

  • 15 min. From Matsumoto Castle
  • 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 upscale 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, KAI is an invitation to immerse yourself in the rich diversity of Japanese culture.


The spacious, tatami-matted rooms have classic Japanese interiors decorated with regional craft artworks, such as paper sliding doors with patterns transferred from ink swirls on a surface of water. Some rooms offer outdoor baths and views of the Japanese Alps.

Room types (4)

KAI Amenities

100% flax yukata

These casual kimono have been meticulously woven to provide cooling in the summer and heat in the winter.
*We will prepare it for those who wish. Please let us know when you check in.

Wrapping cloth

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

Luxury mattresses

Our own brand mattresses have been designed to provide proper support to the body while also being soft enough to sink into, allowing for undisturbed sleep.

Other amenities

Bath / TV / phone / electric kettle / fridge / safe box / hair dryer / toilet with bidet functions / air purifier with humidifying function


KAI Matsumoto is located in Shinshu, a mountainous region known for its rich soil and water. High-quality ingredients produced in this ideal environment are prepared into aesthetically pleasing dishes that pair well with wines produced throughout the region.


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


Locally sourced salmon, chicken, and mushrooms, steamed on a magnolia leaf with a regionally produced miso paste, is served with a variety of smaller dishes in this set meal.

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

Hot spring

Asama Hot Spring produces waters that are gentle on the skin. At KAI Matsumoto, these waters feed into eight types of bath, including outdoor and indoor baths, baths designed to allow bathers to comfortably lie back, and cypress-scented steam baths.

  • Bath hall hours differ for men and women so as to allow for privacy.

Yuagari Lounge

Each bath hall features a lounge where guests may relax on massage chairs or enjoy a cooling drink, including water flavored with a type of vitamin-rich quince indigenous to the region.


Same day reservations available at the front desk.

KAI Cultural Discovery

Every KAI establishment offers a selection of free activities designed to introduce guests to Japan's regional cultures. Matsumoto has a long history as a city of music—even today, it hosts a summer festival organized by renowned maestro Seiji Ozawa. KAI Matsumoto pays homage to the city by organizing nightly concerts in the ryokan's lobby, a cavernous space with excellent acoustics.

Evening concert

Jazz and classical music concerts are held in the KAI Matsumoto lobby every night.

Nagano Wine Tasting Session

A wine tasting activity, while the staff will also talk about the story of local wine and wineries. Please enjoy tasting 3 kinds of local wine.



Check-in 15:00
Check-out 12:00
Rooms 26
10 Japanese-style Rooms / 15 Japanese-style Rooms with outdoor bath / 1 Japanese-style Room with Sauna
Parking 17
Facilities Front Desk / Shared bath halls / Yuagari Lounge / Restaurant / Travel Library / Shop

Travel Library

Every KAI establishment features a library consisting of books on the area's history, culture, crafts, and geography. Complimentary refreshments are also served.

KAI Matsumoto

1-31-1 Asama Onsen, Matsumoto,
Nagano 390-0303