Onsen Villa Hanamomiji, a one-group-per-night exclusive villa in the Amanohashidate area of Kyoto operated by Nishigaki Co., Ltd. (headquartered in Kyotango City, Kyoto Prefecture; president: Shunpei Nishigaki), has added a new private sauna, SAUNA OCEAN RIISI, built with Japanese domestic wood. Standing alone on a hill overlooking Miyazu Bay, the villa is reserved for just one group a day, offering a fully private stay.
The villa accommodates up to 5 guests, while the sauna comfortably seats 6 — enough for the whole group to gather at once without waiting for a turn. The natural Silver Hot Spring and a private pool used as a cold plunge are also located within the villa's grounds, so guests can move between hot and cold without sharing space with other guests.
Official website: https://villa-hanamomiji-yamaboshi.com/
Background: Building a Sauna That Holds Its Heat on a Windy Hilltop
In adding the sauna, Onsen Villa Hanamomiji prioritized creating stable heat regardless of the season. Even on a hilltop exposed to sea breezes, the structure uses layered insulation to keep the room temperature from dropping — reaching its set temperature even in winter and regaining heat quickly after löyly.
Another priority was letting guests stay together throughout. The sauna's capacity of 6 exceeds the villa's guest capacity of 5, so there's no need to wait or take turns.
Private Sauna "SAUNA OCEAN RIISI"
A Cube-Shaped Sauna Cabin Built with Japanese Wood for High Insulation
The cube-shaped sauna cabin is built generously with Japanese domestic wood. A six-layer steel-clad roof and four-layer walls combine insulation with durability.
Inside, a two-tier bench layout lets guests relax comfortably. The temperature ranges from 80–90°C. The electric heater is made by HUUM, with an output of about 7.9kW, and stacks sauna stones vertically in a basket-style design that supports self-löyly.
Because the villa is reserved exclusively from check-in to check-out, guests can use the sauna as many times as they like without watching the clock.
Silver Hot Spring: A Semi-Open-Air "Beauty Bath" with a Silky Texture
The guest room is supplied with the natural Silver Hot Spring, known as a "beauty bath" for its silky, smooth texture. The semi-open-air tub comfortably fits one to two people, offering a place to warm back up after the sauna.
Private Pool: A Cold Plunge After the Sauna
The terrace includes a private pool located just steps from the sauna, doubling as a cold-water plunge. Miyazu Bay stretches out beyond the pool.
Outdoor Air Bath: Sea Breeze from Miyazu Bay on a Hilltop Terrace
After cooling down, guests can relax in chairs on the terrace to catch the breeze. Because the villa sits on a hill, the sea breeze from Miyazu Bay reaches the terrace directly. With the sauna, pool (cold plunge), outdoor air bath, and finally the Silver Hot Spring all located within the villa's grounds, the full hot-and-cold bathing cycle can be repeated without interruption, as many times as guests like.
About Onsen Villa Hanamomiji
Onsen Villa Hanamomiji is a single, stand-alone villa on a hill overlooking Miyazu Bay. Reserved for one group a day, guests can shape their stay entirely on their own terms.
Guest Rooms
The villa is reserved in full, with a capacity of 5 guests. Large windows facing the sea offer a view of Miyazu Bay that changes with the time of day. A kitchen is included, so guests can also cook for themselves. Combined with the adjoining sister villa "Yamaboshi," the two villas can also be booked together at the same time. Note: pets are not allowed at either Hanamomiji or Yamaboshi.
Dining
Meals are available in several styles. Guests can enjoy a glamping BBQ or the 海の京懐石 course featuring mountain and ocean ingredients in their room, dine at a partner restaurant, or bring their own food for a self-catered stay. The villa also has good access to the directly operated restaurants 天香 and 黒岬.
Marine Activities
Miyazu Bay in front of the villa offers cruiser-based marine activities. Guests can also travel out to the village of Ine, known for its funaya boathouses. After time on the water, guests can return directly to the villa's sauna, pool, and Silver Hot Spring.
Who It's For
Couples and Anniversary Trips
With the sauna, Silver Hot Spring, and hilltop terrace all reserved for one group a day, guests won't cross paths with other guests from check-in to check-out.
Family and Multi-Generational Trips
The sauna seats 6, enough for the villa's full capacity of 5 to enter together without waiting. Combined with the adjoining sister villa Yamaboshi, multiple villas can also be booked together at the same time.
Group Trips
Booking the whole villa lets guests set their own schedule. A BBQ terrace and kitchen are included, with a choice of dining styles.
Women's Trips and Sauna Enthusiasts
The silky-textured Silver Hot Spring pairs well with the sauna. The hilltop view over Miyazu Bay also makes for a good backdrop for photos from the stay.
Solo Travelers and Extended Stays
In the quiet of the hilltop, guests can move between the sauna, pool, outdoor air bath, and Silver Hot Spring as many times as they like — well suited to longer, unhurried stays.
Facility Overview
Facility Name: Onsen Villa Hanamomiji
Address: 335-35 Kanamochi, Nanbano, Miyazu City, Kyoto Prefecture
Area: Kyoto Amanohashidate (Umi no Kyoto / Tango area)
Villas: 1 villa, fully exclusive (limited to one group a day)
Capacity: 5 guests
Site Area: Approximately 402.14 m²
Private Sauna: SAUNA OCEAN RIISI (cube-shaped / Japanese domestic wood / six-layer steel-clad roof, four-layer walls / two-tier bench layout / 80–90°C / HUUM electric heater, approx. 7.9kW / self-löyly compatible)
Room Hot Spring: Silver Hot Spring (semi-open-air / silky-textured "beauty bath")
Other Facilities: private pool (usable as a cold plunge after the sauna), BBQ terrace, kitchen
Adjacent Facility: sister villa "Yamaboshi" (can be used together at the same time); pets are not allowed at either villa
Access: approximately 2 hours by car from the Keihanshin area / Check-in: Marinetopia Amanohashidate Building 10 front desk (344 Nanbano, Miyazu City, Kyoto Prefecture)
Website: https://villa-hanamomiji-yamaboshi.com/
Future Plans
Nishigaki Co., Ltd. operates several exclusive-use villas in the Kyoto Amanohashidate area, each with its own private sauna. The company plans to continue developing sauna stays suited to each property's location and design, aiming to extend the length of stays and grow tourism spending in the Tango area.
