Overview

Stay at Ryudo in Yunokoya Onsen, a remote mountain area in northern Minakami, Gunma. The ryokan stands at an elevation of around 800 metres beside the Kinonesawa River, surrounded by wooded slopes that change from fresh spring green to autumn colour and deep winter snow.

The main reason to stay here is the collection of 18 private open-air hot spring baths spread across the grounds. Each bath has its own shape and setting, and you can use the complete circuit without reservations, additional charges, or fixed time limits.

Ryudo has 22 rooms across five buildings on a site measuring around 2,000 tsubo. Accommodation ranges from riverside and mountain-facing Japanese rooms to two-storey maisonettes and detached rooms with private open-air baths.

The buildings and baths follow the shape of a dragon when viewed across the complete site. This design connects with old dragon legends from the Fujiwara area and gives each bath a name ending in “ryu,” meaning dragon.

Accommodation

The East Wing has six riverside Japanese rooms. Each room measures 12 tatami mats and accommodates up to four people on futons. From the window, you can hear the Kinonesawa River flowing beside the building. These rooms permit smoking, so you should choose another category when you require non-smoking accommodation.

The South Wing has six Japanese rooms measuring between ten and 12 tatami mats. Each room includes a window-side veranda and faces the mountain. Futon bedding is prepared on the tatami, and the rooms accommodate up to four people.

The West Wing contains six two-storey maisonettes. The two standard maisonettes have an eight-tatami Japanese room on the lower floor and a six-tatami twin bedroom upstairs. The ceiling above the Japanese room rises approximately five metres, creating an open central space. These rooms accommodate up to four people.

Four additional West Wing maisonettes include a private terrace-style open-air hot spring bath. Each one combines an eight-tatami Japanese room, a six-tatami twin bedroom, and extra sleeping space for up to six people. A microwave is also provided.

Two Semi-Detached Rooms stand beside the river. Each half of the building has an eight-tatami Japanese room, a six-tatami twin bedroom, and a private source-flowing open-air hot spring bath. These rooms accommodate up to four people.

The two Fully Detached Rooms give you the highest level of privacy. Each standalone building includes a ten-tatami Japanese room, a six-tatami twin bedroom, and a private source-flowing open-air bath. Up to six people can stay together without sharing walls with another room.

Standard equipment includes a television, telephone, electric kettle, refrigerator, safe, washlet toilet, hair dryer, yukata, towels, toothbrushes, razors, slippers, and skincare items. Private unit bathrooms use regular water unless the room description specifically includes an open-air hot spring bath.

Smoking conditions differ by category. Several rooms are non-smoking, while the East Wing includes smoking accommodation, so you should check the assigned room type carefully.

Dining

Dinner is a handmade Japanese-Western kaiseki meal prepared by a chef with experience in both Japanese and French cooking. The menu brings together local meat, freshwater fish, mountain vegetables, mushrooms, and other seasonal produce from Gunma and the Okutone area.

The standard dinner features Gunma-raised Joshu beef, often cooked on a ceramic plate at your table. Grilled iwana river fish is another signature dish, along with appetisers, sashimi, simmered food, seasonal vegetables, rice, soup, pickles, and dessert.

Menus change with the time of year. Freshly gathered mountain vegetables may appear during spring, while mushrooms and richer dishes suit the cooler autumn and winter months.

Upgraded plans may focus on Joshu beef sukiyaki or provide a larger serving of Joshu beef. Other plans may add regional meat or grilled river fish with hot bone sake. The exact choices depend on the current accommodation plan.

Dinner begins at 6:00 p.m. Breakfast begins at 8:00 a.m. and is served as a Japanese set meal rather than a buffet.

You eat in an individual dining room on the first floor of the South Wing. Solid partitions separate each room, allowing you to enjoy breakfast and dinner with your own travelling party.

Food allergies can be accommodated within the limits of a shared kitchen when details are supplied before arrival. Complete removal of allergens cannot be guaranteed, and menu changes based only on personal preferences are limited.

Onsen and Wellness

Ryudo receives hot spring water from two sources within the grounds. The water is colourless, clear, and nearly odourless, with a smooth feel and a pH between approximately 8.0 and 8.5.

The spring is classified as a weakly alkaline, hypotonic, high-temperature simple spring. All 18 outdoor baths receive 100% natural water directly from the source without a circulation system.

Traditional bathing indications include fatigue, sensitivity to cold, neuralgia, muscle and joint discomfort, stiff shoulders, bruises, sprains, long-term digestive concerns, and recovery after illness.

You can use the 18 private open-air baths 24 hours a day during an overnight stay. There is no reservation schedule, fixed bathing period, or additional charge.

To use a bath, take its named wooden tag from the bath entrance area. Hang the tag outside the selected bath and lock the door from inside. When you finish, return the tag so that another person can use the bath.

Dairyu is the largest bath and has space for more than 20 people, although it still becomes completely private when you place the wooden tag outside. Kawaryu and Keiryu bring you close to the river, while Mokuryu uses a long hinoki cypress tub.

Other choices include the garden-style Waryu, bamboo-themed Chikuryu, cave-like Anryu, ceramic Tsuboryu, and Soryu with two separate pools. Kaoryu changes its bathing fragrance during the year, while Horyu adds bubbling water.

Joryu includes a sauna beside the open-air bath. Rakuryu combines an outdoor bath with an indoor pool, giving you extra shelter during rain or heavy snow.

Only one of the 18 outdoor baths has a full washing area. Private indoor washing baths and shower rooms are available elsewhere in the property, so you can wash before beginning the outdoor circuit.

Three after-bath rest areas provide cold drinking water. You can return here between baths rather than completing all 18 in one continuous session.

Eight accommodation rooms also include private source-flowing open-air baths. These are the four West Wing Open-Air Bath Maisonettes, two Semi-Detached Rooms, and two Fully Detached Rooms.

Guests with Tattoos

You can use Ryudo’s 18 private open-air hot spring baths when you have tattoos. Once you hang the wooden tag and lock the door, the complete bath belongs to your travelling party.

You do not need to cover your tattoos inside these private baths. Ryudo also identifies itself as a tattoo-friendly onsen ryokan.

A room with its own open-air hot spring bath gives you an additional private option, but it is not necessary for accessing the main 18-bath circuit.

Facilities

Yuyukan occupies a traditional house built in 1887. The building includes a shared indoor bath, an irori hearth, a shop, and a rest space where you can sit between bathing sessions.

The ryokan grounds extend across both sides of the Kinonesawa River. Five accommodation and service buildings connect with the outdoor bath circuit, so you should expect some walking between your room, dining space, and onsen.

The bath-hopping stamp rally adds a playful goal to your stay. A stamp waits inside each of the 18 baths, and you receive a commemorative item after completing the complete circuit.

The lobby provides a complimentary drink service. Vending machines and small rest areas are located around the grounds, while the shop carries local products and souvenirs.

Free parking is available in covered and outdoor areas, with space for approximately 26 vehicles. Ryudo does not provide a station shuttle.

The property is not fully barrier-free. Outdoor paths, steps, separate buildings, and winter snow may make movement difficult when you have limited mobility.

Pets cannot stay at the ryokan. Wi-Fi access may be limited in parts of the site, so Ryudo is better suited to a bathing and nature-focused break than a work-heavy stay.

Activities

Try to complete the full bath circuit and collect all 18 stamps. Because every bath looks and feels different, you can divide the experience between the afternoon, late evening, and following morning.

Spring brings mountain plants and fresh greenery around the river. Summer gives you cooler mountain temperatures and the possibility of seeing fireflies, while autumn colours the valley and winter creates snow-view bathing.

Naramata Lake and Naramata Dam lie within easy driving distance. The lake is surrounded by mountain scenery and offers a rewarding stop during the green and autumn seasons.

Terihakyo Gorge follows the road toward Konroku Pass and is especially known for its autumn colours. Okutone Lake provides another scenic mountain drive through beech forest and remote waterside landscapes.

Minakami is one of Japan’s leading river-activity destinations. Depending on the season, you can arrange rafting, canyoning, shower climbing, or kayaking through outdoor operators around the town.

Winter gives you access to Minakami Kogen Ski Resort and Hodaigi Mountain Resort. Skiing, snowboarding, snowshoeing, and snow play can be combined with a late-afternoon return to Ryudo’s hot spring circuit.

For a longer outing, visit Oze for wetland hiking, take the ropeway toward the slopes of Mount Tanigawa, or stop at Doai Station and its long underground staircase.

Additional Features

Standard check-in begins at 3:00 p.m., and check-out is by 11:00 a.m. The later departure gives you time for another bath and breakfast before leaving.

Day bathing is available from 10:00 a.m. to 6:00 p.m. Entry may stop early or become limited when the baths are busy, so the full schedule is not guaranteed on every date.

During an overnight stay, you can use the private outdoor baths from check-in until departure. Day access follows the shorter daytime schedule.

Ryudo is around 23 kilometres, or approximately 40 minutes by car, from Minakami Interchange. From December through March, you need winter tyres or chains because of snow and ice.

By public transport, travel to Jomo-Kogen Station and take a bus to Minakami Station. Change to the bus for Yunokoya and leave at the final stop. Ryudo is around two minutes away on foot.

The complete journey from Tokyo takes around three hours, depending on train and bus connections. There is no private transfer service, making a car the more flexible choice for sightseeing around the Okutone area.