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- Mizukami Onsen Aratashi Minakami
Mizukami Onsen Aratashi Minakami
Gunma Prefecture/Minakami OnsenEquipped with an auto-roller sauna and all rooms featuring open-air baths, the Onsen Hotel is located by the Tone River.
Opened on November 1, 2022! A Hotel with Onsen Open-Air Baths in Every Room All guest rooms face the Tone River, nurtured by the blessings of nature, and are designed to be simple and tranquil, allowing you to fully experience the colors, scents, breezes, sounds, and air of the natural surroundings. Enjoy a peaceful moment while taking in the murmuring of the river and the ever-changing scenery. Inside the rooms, you can relax comfortably without shoes, and the bed sizes are spacious enough for Child Sharing Existing Bedding! We also offer triple rooms, perfect for trips with close friends or girls' gatherings. Essential amenities are available in the lobby lounge, along with a variety of rental and purchase items. The large public bath features a modern auto-loyly sauna. At the restaurant, we serve dishes made with seasonal and locally sourced ingredients!
I was looking for an Accommodation with an open-air bath in the Room, and I came across Aratashi. I had stayed at a different Accommodation in Gunma before, but I decided on this one after seeing the photos and details. When we arrived, the front desk staff (perhaps from overseas?) were very kind and left a great impression, and the Room we had been looking forward to was clean, simple, and perfect. The automatic water-heating system was very convenient, so we enjoyed the open-air bath many times!! My husband was also very satisfied, and it became an Accommodation we definitely want to return to. The food was delicious as well. Thank you for giving us such wonderful memories!!
eo5407\\ 8/10/2026We were able to book two adjacent Rooms for our children and grandchildren, and we had a wonderful trip. We warmed up in the first-floor Onsen, and at dinner we ordered red wine and enjoyed everything—it was all very delicious. The steak was especially tender, and it was perfect with the homemade bread. Unfortunately, there were dried grass in the bath in our Room so we did not use it, but the first-floor Onsen was more than enough. The staff were also very pleasant and welcoming.
たくださと 7/6/2026
Facilities and Services
See All- Hot spring
- Accessibility
| IN | 15:00~22:00 |
|---|---|
| OUT | 10:00 |
| Number of rooms | 42 rooms |
| Pet | Not allowed |
| Your child | Permitted |
Photo
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Introduction of the Accommodation

Within the facility
The lobby lounge, with its warm wooden ambiance, features comfortable long seating. In the evening, the space transforms into a cozy atmosphere with soft downlighting, perfect for intimate conversations with loved ones. At night, an amenity corner is also available. In the morning, it becomes a curated select shop chosen by the Hotel staff. Enjoy unique encounters and moments only available here. The terrace facing the stream offers a refreshing breeze. Relax on the comfortable sofas and cherish moments filled with smiles.

Guest room
The guest rooms at Minakami Aratashi total 42. All rooms face the Tone River, nurtured by nature, and feature a simple and serene design that allows you to experience the colors, scents, breezes, sounds, and air of nature. Equipped with open balconies and outdoor baths with Onsen, you can enjoy a private Onsen bath at your leisure. Spend blissful moments in the comfort of your usual tranquility.

Public Bath
Indoor baths with two spacious tubs and an open-air bath accompanied by the soothing sound of a mountain stream.
Facilities and Equipment of Accommodation
- The room
- Hot Springs & Baths
- Facilities & Services
Basic Information
| Card information | VISA / MASTER / JCB / AMEX / DINERS / UnionPay / Debit card |
|---|---|
| Pets | Not allowed |
| Breakfast | Please use the restaurant on the 1st floor. ※ Advance seat Reservation is required. (It will be confirmed at check-in) Opening hours: Breakfast 7:30~9:00 To enjoy breakfast, please book a Property Plan with breakfast or make a Reservation at the front desk by the day before. |
| Your child | You can stay. Of course, you are welcome to stay with us.
We would be delighted if you choose our Property for an enjoyable trip with your family.
The accommodation fees for children are as follows:
For children under elementary school age, the accommodation fees are set as below:
- Children aged 6 to 12 (elementary school students) will be charged 70% of the adult rate.
- Children aged 0 to 5 (preschoolers) can stay free of charge.
*However, a Facility usage fee of 1,100 yen will be charged per child.
*Guests aged 13 and above will be charged the adult rate. |
| Room service | Not available |
| Common amenities |
|
| Facilities and Features |
|
| Esthetic Massage | None |
| Fitness gym | None |
| Public Bath |
|
| Open-air bath |
|
| Room with Onsen Indoor Bath |
|
| Spring quality and benefits | Source Name: Minakami Old Onsen Onsen Water Quality: Calcium and Sodium Sulfate Onsen Neuralgia, muscle pain, joint pain, frozen shoulder, motor paralysis, joint stiffness, bruises, sprains, chronic digestive pain, hemorrhoids, cold sensitivity, fatigue recovery, arteriosclerosis, cuts, burns, chronic skin diseases, etc. |
| Sauna | Available |
| Hot stone spa | None |
Reviews
- Rooms & Amenities4.43
- Facility4.48
- Hospitality & Service4.45
- Meals4.35
- Onsen & Bath4.45
- Satisfaction4.42
*Reviews that have been translated from Japanese.*
*Showing only reviews from 一休.com (Japanese) and Yahoo!トラベル.*
- 5.00nao_0116Date Posted: 8/22/2025
Access Information
Gunma Prefecture740-3, Yubara, Minakami Town, Tone District
TEL:+81-278-25-9100
〇If You Are Coming by Train
Using the Shinkansen: Joetsu Shinkansen / JR Tokyo Station → JR Jomo-Kogen Station Approx. 1 hour 15 minutes
Using Local Lines: JR Ueno-Tokyo Line / Tokyo Station → Takasaki Station Approx. 2 hours → Transfer / JR Joetsu Line → Minakami Station Approx. 1 hour 15 minutes
Alternatively, from Takasaki Station → Transfer / JR Ryomo Line → Shin-Maebashi Station Approx. 10 minutes → Transfer / JR Joetsu Line → Minakami Station Approx. 1 hour
【Jomo-Kogen Station】
A Shuttle Service is available. (Reservation required) Approx. 15 minutes
Alternatively, Kanetsu Kotsu Bus Approx. 15 minutes
※If using the Kanetsu Kotsu Bus from Jomo-Kogen Station:
Take the bus bound for Minakami Station → Get off at Minakami Onsen (630 yen) Approx. 15 minutes
It is about a 5-minute walk from the Minakami Onsen bus stop.
※If using a taxi from Jomo-Kogen Station:
The fare is approximately 5,000 yen Approx. 15 minutes
【Minakami Station】
It is about a 15-minute walk.
〇If You Are Coming by Car
It is about 7 minutes from the Kanetsu Expressway Minakami IC.
- Parking Information
- Fee
- Free for guests
- Parking time
- ---
- Parking space
- No restrictions
- Number of parking spaces
- 28 cars available outdoor
- Valet service
- Unavailable
- The parking lot is not Reservation-based and is available on a first-come, first-served basis.
If the parking lot is full, we will guide you to a nearby parking lot. (1-minute walk / free of charge)
- You can access your car at any time during your stay.
- The parking lot is an outdoor flat parking area.
* For large or long vehicles, please park in the designated space specified by the Hotel.
* Please note that we are not responsible for any accidents or thefts on the premises.
Additionally, any damage to the Facility will be charged in full.
Thank you for your understanding.
- Pickup and drop-off information
- Available (Free)[Shuttle Service between Joetsu Shinkansen/Jomokogen Station and Aratashi]
- A prior Reservation is required to use the shuttle bus.
For Reservations, please contact us at TEL: 0278-25-9100
* The shuttle bus can accommodate up to 8 passengers. Depending on the number of passengers, you may not be able to board.
* If there is no Reservation or use of the shuttle bus, the service will be suspended.
Please note this in advance.
The shuttle operates on a fixed schedule as follows:
[Departure from Jomokogen Station Bus Terminal]
14:55 / 15:55
[Departure from Aratashi Minakami]
9:00 / 10:00
Frequently Asked Questions
Please provide information about Open-air bath.
・Business Hours: 15:00~10:00 ・Hot spring: Available ・Free-flowing: None ・Cloudy hot spring water: None ・Supplementary information: (Heating, Adding Water) There are men's and women's Onsen large baths on the first floor of our Hotel. Operating hours: 15:00-23:00 / 5:00-10:00 * The baths are closed during the late night hours. * The operating hours of the large baths may change depending on the occupancy status. (Please contact the Hotel for details)
What are the qualities and benefits of the hot spring water?
The spring quality and efficacy of the hot spring are as follows. ・Spring quality: Source Name: Minakami Old Onsen Onsen Water Quality: Calcium and Sodium Sulfate Onsen ・Spring efficacy: Neuralgia, muscle pain, joint pain, frozen shoulder, motor paralysis, joint stiffness, bruises, sprains, chronic digestive pain, hemorrhoids, cold sensitivity, fatigue recovery, arteriosclerosis, cuts, burns, chronic skin diseases, etc.
What kind of facilities and features are available?
There are the following facilities and features. Hot spring・Open-air bath・Large public bath・Sauna・Within a 5-minute walk to the convenience store.・Free shuttle service・Barrier-free
I would like to know the access information.
〇If You Are Coming by Train
Using the Shinkansen: Joetsu Shinkansen / JR Tokyo Station → JR Jomo-Kogen Station Approx. 1 hour 15 minutes Using Local Lines: JR Ueno-Tokyo Line / Tokyo Station → Takasaki Station Approx. 2 hours → Transfer / JR Joetsu Line → Minakami Station Approx. 1 hour 15 minutes Alternatively, from Takasaki Station → Transfer / JR Ryomo Line → Shin-Maebashi Station Approx. 10 minutes → Transfer / JR Joetsu Line → Minakami Station Approx. 1 hour 【Jomo-Kogen Station】 A Shuttle Service is available. (Reservation required) Approx. 15 minutes Alternatively, Kanetsu Kotsu Bus Approx. 15 minutes ※If using the Kanetsu Kotsu Bus from Jomo-Kogen Station: Take the bus bound for Minakami Station → Get off at Minakami Onsen (630 yen) Approx. 15 minutes It is about a 5-minute walk from the Minakami Onsen bus stop. ※If using a taxi from Jomo-Kogen Station: The fare is approximately 5,000 yen Approx. 15 minutes 【Minakami Station】 It is about a 15-minute walk. 〇If You Are Coming by Car It is about 7 minutes from the Kanetsu Expressway Minakami IC. Is parking available?
・Fee: Free for guests ・Parking space: Length --- Vehicle width --- Vehicle height --- ・Number of parking spaces: 28 cars ・Valet Service: Unavailable Upon arrival, we may ask to hold your car keys depending on the parking lot's congestion. - The parking lot is not Reservation-based and is available on a first-come, first-served basis. If the parking lot is full, we will guide you to a nearby parking lot. (1-minute walk / free of charge) - You can access your car at any time during your stay. - The parking lot is an outdoor flat parking area. * For large or long vehicles, please park in the designated space specified by the Hotel. * Please note that we are not responsible for any accidents or thefts on the premises. Additionally, any damage to the Facility will be charged in full. Thank you for your understanding.
Please provide information about Room with Onsen Indoor Bath.
・Hot spring: None ・Free-flowing: None ・Cloudy hot spring water: None ・Supplementary information: (Heating, Adding Water)
Is an internet connection available?
Connection is possible. ・Wi-Fi is available. For more details, please refer to the room and plan information.
Is there a sauna?
Yes, there is.
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