YESTERDAY’S VILLA, TODAY’S ESCAPE

Once the private villa of the Mitsubishi family, Sanyo-so is now one of Japan’s most serene hot spring retreats. It carries the quiet dignity of 1929 architecture alongside gardens that shift with each season. Inside, tatami floors, sliding screens, and open-air baths invite guests to slow down, while multi-course kaiseki dinners showcase the best of Japanese culinary tradition. Travelers are drawn here to celebrate milestones or simply immerse themselves in timeless, authentic Japanese experiences.

Experiences

The Mythical Peach Blossom Spring Dazzles in Every Season

The garden, which undergoes a beautiful transformation as each season passes, covers an area of 3,000 tsubo.
Visitors can view the progression of the seasons with cherry blossoms in spring, irises in summer, autumn leaves in autumn, and plum blossoms in winter.
The sound of water from the pond in the center of the garden, which spreads out like the ethereal Peach Blossom Spring from traditional folklore, soothes the soul, calms the mind, and eases tired bodies. In addition, a pavilion stands on a hill from which a panoramic view of the garden can be enjoyed. You can also enjoy the view of the mountains surrounding Sanyo-so.
This is a place that enriches and delights the senses of all who visit. The fragrance of spring flowers, the cool breeze of summer, the vibrant colors of fall, and the serenity of winter. The changes of the seasons offer new and unique views of the landscape.

Television

Free parking

Dining

Spa

Cafe

Bar

Elevator

No smoking

Safety box

Garden View

Wifi

Hair dryer

Air conditioner

Fridge

Hot spring

Rooms

Japanese Suite

This is a three-room suite consisting of a main room, a secondary room, and a tertiary room. Designed to be both spacious and bathed in sunlight, this VIP suite is over 140 square meters in size.

Japanese-style Room Deluxe

This is a guest suite consisting of two adjoining rooms, the main room and a secondary room. Some suites have a bed in the secondary room.

Japanese/Western-style Deluxe Room

This is a combination Japanese/Western-style room consisting of a main room and a secondary room serving as the bedroom. Deluxe rooms are at least 91.5 m² in size.

Japanese/Western-style Standard Room

This is a combination Japanese/Western-style room consisting of a main room and a secondary room serving as the bedroom. Standard rooms are at least 63.5 m² in size.

Fujinouraba(dog friendly room)

Two room in the separate building, given the name "Hanare" (Fuji-no-Uraba), are available exclusively for guests accompanied by their dogs.

Main Building VIP Guest Room

This suite is located on a hill in the garden about 300 meters from the entrance area of the New Building. The private tatami hallway is about 50 meters long, creating a truly private sensation for guests.

A Room With A Large Window And A Table With Chairs And A Rug

Main Building Annex

The rooms are nestled in the garden. They overlook a beautiful garden that spotlights the changing seasons.

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Restaurant

Restaurant “Yuhou”

The Izu-Nagaoka area is rich in both seafood and produce grown in the mountains.
The chef uses personally selected local ingredients in the menu and cooks them in a way that brings out the best elements of each one.

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Lounge・Souvenir shop

The circular building is on the left as soon as you enter Sanyo-so. Like the New Building, the Lounge was designed by architect Togo Murano.

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Bar Kanogawa

Bar Kanogawa, a special space located at the back of Restaurant Yuhou.
This is the perfect location for spending special time with a special someone, or family time after dinner.

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Gallery