Gunma · Minakami Onsen
Oedo Onsen Monogatari Premium Matsunoi
大江戸温泉物語Premium 松乃井
A large inn in Minakami, formerly Gensen-yu no Yado Matsunoi, now part of the Oedo Onsen Monogatari Premium line. Three open-air baths face a garden of 10,000 tsubo, Akane-no-yu, Aono-yu and Wakaba-no-yu, with great baths as well. Akane-no-yu switches between men and women, and the men's open-air bath has a barrel sauna. Day bathing needs no reservation and runs 7:00 to 10:00 and 15:00 to 24:00 with last entry at 22:00, at 1,150 yen for adults on weekdays, 1,400 yen on weekends and holidays and 1,600 yen on peak days. Towels rent for 330 yen. People with tattoos may use the great baths only if they are fully covered with the designated cover stickers, which are sold on site.
- Price (adult)
- ¥1,150
- Hours
- 07:00–10:00 / 15:00–24:00 (last entry 22:00)
- Closed
- Irregular closing (closed 1–11 December 2026)
- Access
- About 15 minutes on foot from Minakami Station on the JR line (a shuttle takes 3 minutes with advance notice); about 5 minutes from Minakami IC on the Kanetsu Expressway.
- Water type
- Alkaline simple
- Tattoos
- OK if covered
- Admission
- No reservation is needed for day bathing. It costs 1,150 yen for adults and 440 yen for elementary pupils on weekdays, 1,400 yen and 550 yen on weekends and holidays, and 1,600 yen and 630 yen on peak days. Infants and children under 3 are free, consumption tax and bathing tax are included, and towels rent for 330 yen.
- Spring water
- A simple spring, hypotonic, weakly alkaline and cool at source, with water added and the bath heated. The water is mild enough for a long soak and suits alternating between the sauna and the cold plunge.
- Baths
- Three open-air baths, Wakaba-no-yu, Aono-yu and Akane-no-yu, sit alongside the great baths, and Akane-no-yu switches between men and women. The men's open-air bath has a barrel sauna, and the bathing rooms include a mist sauna and a cold plunge. Private baths run 15:00 to 24:00 at 3,000 yen for 45 minutes for three to five people, with same-day booking only.
- Access & parking
- About 15 minutes on foot from Minakami Station on the JR line; the shuttle takes around 3 minutes if arranged beforehand. By car it is roughly 5 minutes from Minakami IC on the Kanetsu Expressway. The short hop from the station makes it an easy day trip.
- Day bathing
- It can be used without booking from 7:00 to 10:00 in the morning and 15:00 to 24:00 in the afternoon, with last entry at 22:00. Entry may be refused when it is crowded, so allow slack around peak periods and long weekends. The inn has announced a closure from 1 to 11 December 2026.
- Tattoos
- People with tattoos are in principle not admitted to the great baths. They may, however, use them if the inn's designated cover stickers, sold on site, hide the marks completely. If the area is large, call ahead to discuss it.
- Phone
- 0278-72-3200
- Official site
- ooedoonsen.jp ↗
- Open in Google Maps
- Google Maps ↗
Essentials
Stay in this onsen town
Compare and book stays in Minakami Onsen. Day bathing itself needs no booking.
Opens partner booking site (affiliate)
Why go
- Three open-air baths facing a 10,000-tsubo garden
- Day bathing accepted from 7:00
- Tattoos accepted if covered with stickers
Bathing from morning to midnight
Day bathing here is accepted from 7:00 in the morning and the baths stay open until midnight. Because it runs in a morning session and a late afternoon and evening one, travellers spending a day in Minakami can soak once early and again after dark. The last entry is at 22:00.
The barrel sauna and cold plunge
A barrel sauna of wooden staves stands at one side of the men's open-air bath, which makes it easy to move between heat and cold air. Inside, the bathing rooms include a mist sauna and a cold plunge, suiting alternating hot and cold soaks. The water is mild, so going in and out several times is not a strain.
How day bathing works
You can walk straight in without a reservation, and the price changes by weekday, weekend and peak day. Towels rent for 330 yen, which is handy if you want to travel light. Consumption tax and bathing tax are included. Entry is limited when it is crowded, so early mornings or weekday afternoons are roomier in peak season.
Before you go
- Tattoos are fine if covered with a sticker sold at reception (size limits apply).
- Ryokan day-use hours are limited and may be suspended in peak season — phone the same morning.
- Last entry is 30–60 minutes before closing.
Features
Sauna & wellness
Rules & private
Mood & scenery
Price
Amenities
✔ Verified operating: 2026-10 Operating status and rates cross-checked against the official site and onsen guides (full source notes in Japanese on the JA page)
Prices and hours change. Check official sources before visiting.
More in this area
Sainokawara Open-Air Bath
A 10-minute walk west of Kusatsu's Yubatake, at the far end of Sainokawara Park, lies one of Japan's largest open-air baths. Around 500 m² of pool brims with strongly acidic water, open to the surrounding forest. Snow in winter, fresh green in summer, illuminations at night. There are no washing stations — this is purely for soaking.
Otakinoyu
A large day facility where you can try Kusatsu's traditional 'awase-yu' — a row of wooden tubs at rising temperatures, entered in order. Indoor baths, rotenburo, sauna, plus rest and dining areas make it good for half a day. About 10 minutes' walk from the Yubatake, or a short bus ride. Admission ¥1,200 (2026); three-bath pass with Gozanoyu and Sainokawara ¥2,100.
Gozanoyu
Right in front of the Yubatake, a wooden recreation of the Edo–Meiji communal baths. Wood and stone bath halls alternate between men and women daily, with two sources (Yubatake and Bandaiko). The upstairs hall looks down on the Yubatake.
