Right Onsen › Gunma › Kusatsu

Ōtaki no Yu

Name: Ōtaki no Yu
Address: 596-13 Kusatsu, Agatsuma District, Gunma 377-1711, Kusatsu, Gunma, JP
Telephone: +81279-88-2600
Rating: 4.3

4.3★ · 5012 Google ratings · Kusatsu, Gunma · 大滝乃湯

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

✓ YesThis is a standard day-use bathing facility.stated by 2 visitors · Aug 2026

Hours

09:00–21:00from the facility listing

Price

¥1,200Adult admission is most often quoted at 1200 yen, though one visitor during the outdoor-bath construction closure reported paying only 1000 yen.stated by 3 visitors · Jul 2026 – Aug 2026

Tattoos

Not known · call aheadno policy stated in the 35 recent reviews we read or on the facility's website

How we know this

Watch out

Outdoor bath

An outdoor bath is normally part of the facility, but the men's-side outdoor bath and graduated 'awase-yu' were under roughly a month of construction starting mid-August 2026 (women's side unaffected) — worth checking current status before visiting.

stated by 3 visitors · Aug 2026

Bath temperature

The hottest of the four graduated 'awase-yu' tubs runs around 46-47C, reported as barely tolerable.

stated by 2 visitors · Aug 2026

Spring type

The spring is strongly acidic, causing a tingling sensation on skin — a caution for sensitive skin.

stated by 1 visitor · Jul 2026

The bath

What you’ll find

One of Kusatsu's flagship day-use bathhouses, offering strongly acidic kakenagashi spring water in an indoor bath, outdoor bath, sauna, cold plunge, and a famous four-stage graduated 'awase-yu' soaking sequence that climbs to scorching temperatures, plus a restaurant and free parking.

Outdoor bath

✓ YesAn outdoor bath is normally part of the facility, but the men's-side outdoor bath and graduated 'awase-yu' were under roughly a month of construction starting mid-August 2026 (women's side unaffected) — worth checking current status before visiting.stated by 3 visitors · Aug 2026

Sauna

✓ YesA sauna is available alongside the baths.stated by 3 visitors · Aug 2026

Cold bath

✓ YesA notably cold plunge bath is available next to the sauna.stated by 2 visitors · Aug 2026

Rest area

✓ YesA large tatami rest area is available for lounging after bathing.stated by 4 visitors · Jul 2026 – Aug 2026

Restaurant

✓ YesAn on-site restaurant, 'Yu no Hana', serves regional specialties like himokawa udon.stated by 4 visitors · Jul 2026 – Aug 2026

The water

Free-flowing (kakenagashi)

✓ YesAll the baths run on genuine kakenagashi Kusatsu spring water.stated by 2 visitors · Aug 2026

Spring type

Strongly acidicThe spring is strongly acidic, causing a tingling sensation on skin — a caution for sensitive skin.stated by 1 visitor · Jul 2026

Bath temperature

46°CThe hottest of the four graduated 'awase-yu' tubs runs around 46-47C, reported as barely tolerable.stated by 2 visitors · Aug 2026

Practical

What to bring

Lockers

✓ FreeLockable lockers are provided free of charge.stated by 2 visitors · Aug 2026

Guide

What visitors add

Outdoor bath & sauna

Full lineup confirmed by many reviews: large indoor bath, open-air bath, sauna, cold plunge, utase-yu (waterfall massage) and the signature awase-yu. At least five reviews mention the rotenburo and at least four the sauna. One reviewer found the cold bath painfully cold in winter; one found the utase-yu water pressure weak. There is also an outdoor cool-down (totonoi) space.

stated by 8 visitors · Jul 2026 – Aug 2026

Outdoor bath & sauna

The signature awase-yu is four small tubs entered in rising temperature order; at least eight reviews describe it. Reviewer temperature reports for the final tub: 'up to 46 C' (one), 'about 47 C' (one), '45 C+' (one who lasted a minute and lists the four tubs roughly 38 / 40 / 42-43 / 45+ C); many reviewers could not enter the last tub at all. Tubs fit about 4 people each and queues form at busy times (three reviews).

stated by 8 visitors · Jul 2026 – Aug 2026

Day-use visits

A full day-use complex - one of Kusatsu's 'three baths' - with restaurant (Yunohana, himokawa udon), cafe, tatami rest areas and free parking (three reviews mention parking, one explicitly free). No opening hours are stated in reviews; one visitor arriving 'quite close to closing' found it empty. Weekends and holidays are consistently crowded per four reviews, though two off-peak visitors found it calm.

stated by 7 visitors · Jul 2026 – Aug 2026

The water

Strongly acidic Kusatsu water: one reviewer warns the strong acidity makes skin tingle 'like an electric bath' and cautions sensitive skin; another felt stinging after having shaved that morning. Two reviews mention a mild sulfur smell; one describes clear water with a slippery feel whose warmth lingers after bathing; one says skin comes out smooth.

stated by 5 visitors · Aug 2026

Towels, soap & lockers

Lockable lockers and dryers are free (three reviews). Amenities are well stocked - one reviewer says women can come empty-handed since hair oil and makeup remover are provided. Towel and bath-towel rental costs extra, so bring your own (one review). Weekend crowds can mean queuing for washing stations and dryers (two reviews).

stated by 5 visitors · Aug 2026

Price

Adult admission is 1200 yen (three reviews; one adds children 600 yen and a 10% JAF-app coupon discount). One reviewer paid 1000 yen while the open-air bath was under construction in Aug 2026 and felt it should have been half price. One reviewer finds 1200 yen a bit expensive for the cramped awase-yu tubs.

stated by 4 visitors · Jul 2026 – Aug 2026

Timing