Can I visit for the day?

Name: Ainoyama-no-Yu
Address: 530-1 Ogikubomachi, Maebashi, Gunma 371-0001, Maebashi, Gunma, JP
Telephone: +8127-264-3030
Rating: 3.9

Right Onsen › Gunma › Maebashi

Ainoyama-no-Yu

3.9★ · 1233 Google ratings · Maebashi, Gunma · あいのやまの湯

Open in Google Maps Official site (Japanese)

✓ Private day-use bath✓ Natural hot-spring water✓ Free-flowing source water✓ Outdoor bath✓ Rest area✓ Restaurant

Before you go

Can you bathe here?

Day visitors

✓ YesOpen for day-use bathing with no time restriction on entry.stated by 2 visitors · Jul 2026 – Aug 2026

Hours

11:00–20:00 · closed Tuesdayfrom the facility listing

Tattoos

Cover requiredstated on the facility's website · read 2026-09

How we know this

The bath

What you’ll find

A large, modern roadside-station super sento with an attached pool, salty sodium-chloride baths, sauna, outdoor bath, restaurant, and private bathing rooms, popular with families and hikers off Mt. Akagi.

Outdoor bath

✓ YesThere is a separate outdoor bath area alongside the indoor baths.stated by 3 visitors · May 2026 – Jul 2026

Sauna

✓ YesA sauna is available and well-regarded, with good temperature and a water fountain nearby.stated by 2 visitors · May 2026 – Jun 2026

Cold bath

✓ YesThe cold plunge bath is described as reasonably sized and easy to use.stated by 1 visitor · Aug 2026

Rest area

✓ YesThere is a free rest/lounge room in addition to a table-tennis area and courtyard playground.stated by 1 visitor · May 2026

Restaurant

✓ YesThe on-site restaurant is popular, offering set meals, rice bowls, and soba, though one reviewer found prices a bit high.stated by 5 visitors · May 2026 – Aug 2026

The water

Spring type

Sodium chloride (salty)The spring is a sodium-chloride type, described by multiple reviewers as noticeably salty and warming.stated by 3 visitors · Apr 2026 – May 2026

Guide

What visitors add

Price

Admission is repeatedly described as cheap or very reasonable (10 distinct reviews, April-August 2026). The only concrete figure given: one reviewer says seniors pay 300 yen.

stated by 10 visitors · Apr 2026 – Aug 2026

Outdoor bath & sauna

The facility has indoor and outdoor baths (3 reviews), a sauna (2 reviews — one praises the temperature setting and a drinking fountain right outside the door, noting entry queues during holiday crowds), and a reasonably large cold-water bath (1 review). A pool is attached to the bathing area.

stated by 5 visitors · May 2026 – Aug 2026

Staffing

The facility is staffed (reception counter plus attendants), but service reviews conflict: 2 reviewers praise staff or locals as kind and helpful, while 3 report poor service (no explanation of the pay system, a mishandled double charge, and a pool swim-cap rule enforced without being posted or explained).

stated by 5 visitors · May 2026 – Jul 2026

Day-use visits

Two reviewers report arriving on 13 May 2026 to find the facility closed even though Google Maps showed it open; one warns it sometimes closes without notice. One other reviewer arrived too early in the morning to get in.

stated by 3 visitors · May 2026 – Jul 2026

The water

The water is a salty sodium-chloride spring (3 reviews): one warns it stings badly if it gets in your eyes, one says salt concentration is high but the bath a bit lukewarm, and one calls it a warming type; the eye-sting reviewer also reports her rosacea-like skin condition felt eased and skin smoother.

stated by 3 visitors · Apr 2026 – May 2026

Day-use visits

There is no longer a time limit on a visit: one reviewer (August 2026) says the cheap-admission time restriction was abolished, and another (July 2026) values that there is no time limit.

stated by 2 visitors · Jul 2026 – Aug 2026

Timing