Overview

Stay beside the Tone River at Aratashi Minakami, a 42-room hot spring hotel in Minakami Onsen, Gunma. The property opened in November 2022 at the foot of the Tanigawa mountain range, combining river views, natural hot spring bathing, seasonal dining, and clean contemporary design.

Every room faces the river and has a private natural hot spring bath on its balcony. You can listen to the water below, watch the surrounding forests change through the seasons, and bathe without leaving your accommodation.

The public bathing area adds indoor and outdoor onsen pools, an automatic löyly sauna, a cold-water bath, and outdoor seating. The restaurant also faces the mountains and river, allowing the landscape to remain part of your stay from breakfast until dinner.

Accommodation

Aratashi Minakami offers two main room categories: Twin Rooms and Triple Rooms. Both measure approximately 27.5 square metres and occupy the second to fourth floors.

The Twin Room accommodates up to two people. Two beds, a sofa, a work surface, and a compact sitting area make the room suitable for a solo stay or a trip for two.

The Triple Room accommodates up to three people. It includes two 120-centimetre-wide beds and one 97-centimetre-wide bed, giving each person a separate sleeping space.

Every room opens onto a wide balcony overlooking the Tone River. A private open-air bath on the balcony receives natural hot spring water, allowing you to soak at any time during your stay.

The glass doors between the room and balcony bring the river and surrounding trees into view. Closing the doors reduces the sound of the water when you are ready to sleep.

The shower, washbasin, and washlet toilet sit separately from one another. This arrangement makes it easier for two or three people to prepare at the same time.

Room equipment includes heating and air conditioning, a television, refrigerator, electric kettle, mugs, safe, hair dryer, slippers, nightwear, towels, and free Wi-Fi. Toiletries and selected personal-care items are available from the amenity area in the lobby.

All rooms are non-smoking. Smoking is limited to the designated room inside the hotel.

Dining

Dinner is served in the first-floor restaurant, where large windows look toward the Tone River and the mountains of Minakami. Warm wood, soft lighting, and widely spaced tables create a relaxed setting for the evening meal.

The main dinner follows a casual French course format rather than traditional kaiseki. The kitchen changes the menu around every three months, using seasonal produce and ingredients from Minakami and other parts of Gunma.

The courses may begin with a small amuse-bouche and appetiser before moving through soup, salad, fish, meat, and dessert. Recent menus have featured Japanese soba prepared with a tomato-based sauce, seafood, seasonal vegetables, fish with white wine sauce, beef, foie gras, fruit, and French-style desserts.

A hamburger steak plate may also be available through selected plans. The patty combines Yamato pork with Joshu beef and is served with demi-glace sauce, salad, bread or rice, and dessert.

A children’s plate provides familiar dishes such as omelette rice, fried shrimp, meatballs, vegetables, and a small dessert.

Dinner normally runs from 6:00 p.m. to 9:00 p.m. Dining times are arranged according to availability, so your preferred starting time may not always be available.

Breakfast is served between 7:30 a.m. and 9:00 a.m. You choose a Japanese or Western set meal rather than eating from a buffet.

The Japanese breakfast may include grilled fish, rice, miso soup, tofu, egg, vegetables, and several small side dishes. The Western breakfast may include bread, salad, eggs, soup, yogurt, gratin, meat, and fruit.

Food allergies need to be reported at least three days before arrival. The kitchen uses shared preparation areas, so complete allergen separation cannot be guaranteed. Vegetarian and vegan meals are not available.

Onsen and Wellness

Every room includes a private open-air bath supplied with natural Minakami Onsen water. You can use it whenever you choose, without booking a bathing period or entering a shared facility.

The official description identifies the water as an alkaline simple spring with a gentle texture. A soak can help you warm up after skiing, hiking, rafting, or travelling through the mountains.

The communal bathing areas include large indoor pools and an outdoor natural hot spring bath. The riverside setting lets you hear the Tone River and feel the mountain air while soaking outside.

The public bath opens from 3:00 p.m. to 11:00 p.m. and again from 5:00 a.m. to 10:00 a.m. It closes overnight and between the morning and afternoon sessions for cleaning.

An automatic löyly system adds bursts of steam to the sauna at scheduled intervals. After the sauna, you can cool down in the cold-water bath and rest on a reclining chair in the outdoor air.

Cleansing products, lotion, moisturiser, shampoo, conditioner, and body wash are provided in the bathing area. Lockers and a drinking-water station are available in the changing space.

There is no reservable family onsen. Your room’s open-air bath provides the private natural hot spring option.

Guests with Tattoos

The communal indoor baths, outdoor bath, sauna, and cold-water bath do not accept tattoos.

You can use the private natural hot spring bath attached to your room freely. Every room has its own open-air onsen, so you do not need to select a special room category or reserve a separate bathing session.

Facilities

The first-floor lobby lounge gives you a comfortable place to sit before receiving your room or between meals and bathing. Wood finishes and long seating areas continue the simple design used throughout the hotel.

Welcome sweets are served in the restaurant from 3:00 p.m. to 5:00 p.m. They provide a light snack after arrival and before your first hot spring bath.

The amenity area opens from 3:00 p.m. until midnight. You can collect the toiletries and personal-care products you need rather than finding a full set placed automatically inside the room.

A riverside terrace lets you sit outside with a drink and listen to the Tone River. Near the public bath, a raised tatami platform overlooks a small stone garden and provides another place to rest.

Shared facilities include a coin laundry, water dispensers, a microwave, an ice machine, and vending machines. These are useful when you stay for several nights or arrive without a dinner plan.

Free Wi-Fi is available throughout the building. An elevator connects the accommodation floors, and selected areas support easier movement when you have limited mobility.

Free parking is available in the main and secondary parking areas. Four spaces support electric-vehicle charging.

Activities

Walk to Suwakyo Gorge in around 20 minutes and follow the Tone River through rocky scenery, bridges, and wooded paths. The nearby roadside station, Minakami Mizukikokan, has local products, tourist information, and access to the river area.

Minakami is one of Japan’s leading destinations for rafting and canyoning. Spring snowmelt creates stronger rafting conditions, while warmer months bring canyoning, kayaking, stand-up paddleboarding, and calmer river experiences.

Drive to the Tanigawadake Ropeway in around 20 minutes. The gondola climbs toward the upper slopes of Mount Tanigawa, where you can enjoy mountain views, walking routes, and seasonal landscapes.

Doai Station is known for its deep underground platform and long staircase. The station and nearby cafés make an interesting stop before or after visiting Mount Tanigawa.

Winter gives you access to ski areas such as Norn Minakami, Okutone Snow Park, Hodaigi Mountain Resort, and Tanigawadake Tenjindaira. Snowshoe tours provide a slower way to explore the winter landscape.

From early summer, fireflies can be seen in selected parts of Minakami. Autumn brings strong colour to Suwakyo, the Tanigawa area, and the roads through the surrounding mountains.

You can also spend your time at the hotel, moving between your private bath, the public onsen, sauna, restaurant, terrace, and riverside room.

Additional Features

Check-in begins at 3:00 p.m., and check-out is by 10:00 a.m. Dinner plans normally require arrival by 7:00 p.m., while room-only plans may allow a later check-in.

JR Minakami Station is around 15 to 17 minutes away on foot. A taxi provides an easier option when you have large luggage.

A complimentary shuttle connects the hotel with Jomo-Kogen Station. Current scheduled departures from the station are at 2:55 p.m. and 3:55 p.m., while return services leave the hotel at 9:00 a.m. and 10:00 a.m.

You need to reserve the arrival shuttle by the previous day. Services do not operate when no reservation has been received.

By car, the hotel is around seven minutes from Minakami Interchange. The journey from central Tokyo usually takes around two hours, depending on traffic.

Snow and ice affect Minakami during winter. Winter tyres or chains are essential when you arrive by car during the colder months.

Pets cannot stay at the hotel. All accommodation rooms are non-smoking, and a designated indoor smoking room is provided.