Kirishimaya Ryokan

桐島屋旅館きりしまやりょかん

Lodging

Kusatsu Onsen

Kanto·Gunma

0279-88-2871 shiriyaki.com

Contact form

Day Use

Yes

12:00–19:00

Times are approximate, so it's best to check in advance

¥1,000

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

Capabilities

Private BathYes

Private bath available for day-use visitors or hotel guests to reserve

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooWith Conditions

Allows entry with visible tattoos

Small fashion-purpose partial tattoos are allowed in the shared baths; guests who are concerned can use the private bath instead.

WashingYes

Shower, wash stations, soap and shampoo provided

Rest AreaYes

Relaxation space for after bathing

ParkingYes

On-site or nearby parking available

湯畑

Yubatake Spring

酸

Acidic

+ 含硫黄泉 · Sulfate · Chloride

Color: colorless and transparent
Taste: not recorded
Odor: hydrogen sulfide odor present

Hydrogen-Aluminum Sulfate-Chloride spring

pH 2.1AcidicHot source · 51°CUltra-acidicHigh silicaSulfur-rich

Composition fingerprint1.6 g/kg dissolved · Hypotonic

H⁺37

Al³⁺20

Ca²⁺15

SO₄²⁻54

Cl⁻36

◀ CationsAnions ▶

Hydrogen H⁺: makes the water acidic — sharp and bactericidal.
Sulfate SO₄²⁻: "gypsum / Glauber's salt" — vessels and wound healing.

Known good for

Skin conditionsatopic skin, eczema
Circulationtired legs
Aches & jointsstiff shoulders

Sensitive-skin cautionbroken or dry skin

Drawn from Kusatsu's Yubatake source, this is an acidic, sulfur-bearing aluminium sulfate-chloride water with an unusually assertive make-up. At pH 2.1 it is sharp enough to prickle on contact, and although it runs colorless and clear, a distinct hydrogen sulfide note rises off it. Metasilicic acid is generous at 216 mg/kg, leaving a fine silica film that softens the bite of the acid on the skin. With 1,650 mg/kg of dissolved solids the water is moderately mineralized, so there is real body behind the sting.

Sampled at wellhead·Analyzed May 15, 2013·一般社団法人群馬県薬剤師会（環境衛生試験センター）

Explore the water

Views

Forest

Highlights

Lukewarm Bath

Programs

About

The signature bath here is the shiriyaki-buro (尻焼き風呂), a patented tub built from red pine with three stepped pools, hot, warm, and lukewarm, each fed by its own hot-spring jet that you settle against. There's also a small open-air bath overlooking greenery, often said to be the smallest rotenburo in Kusatsu, a free private bath big enough for two, and two indoor baths that swap between men and women daily. The water is 100% natural onsen, kept flowing fresh, and its cloudiness shifts day to day, sometimes turning milky white with mineral flakes floating in it. Kirishimaya has been open since the Meiji era, a few minutes' walk from Kusatsu's Yubatake (湯畑) hot-spring field but set in a quiet spot next to Kakoyama Park (囲山公園). It's a family-run inn with old photographs and antiques around the lobby, a manga room to read in after a soak, and a B&B setup, breakfast only, no dinner service.

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3.0

1 review

Sergey M

6 months ago

799. Kirishimaya Ryokan, Kusatsu Onsen, Gunma ★ I visited for a day-use bath for ¥1000. The exact day-use hours were unknown, I visited at around 12:20. Toreco cards are issued for the onsen. The ryokan owner used to visit Russia often in the past. There are artifacts and documents about that in the ryokan. 1. Indoor area. It is comfortable to breathe inside. 1.1. Small bath. The water is clear with a bluish tint, with lime on the bottom. Temperature 48. 1.2. Medium bath. The water is clear with a bluish tint, with lime on the bottom. Temperature 46. 1.3. Large bath. The water is clear with a bluish tint, with a little rare white lime. Temperature 43.5. 2. Small outdoor bath, balcony type. There is actually no view. The water is clear with a bluish tint. Temperature 42. Worth keeping in mind for those who like high temperatures. 14.01.2026

V k

8 months ago

Budget ryokan without kaiseki (breakfast only). Onsen is 24 hours, roughly 10:00 to 13:00 is cleaning time but best to confirm. Higaeri access depends on the ryokan's occupancy - during peak season and weekends they may not allow it. Has a TORECO card. Two shared bath areas (one with a mini-rotenburo for one person) and a private bath (free, no reservation needed, but the hottest of them all). View from the rotenburo onto a small forest, quite cozy. Water temperature per the owner: 38-47, the rotenburo being the coolest. Some rooms have an in-room toilet; views from all rooms are roughly the same, as in the photo. Free towels, yukata and haori, can be changed daily. Common area has lots of manga in Japanese and free charcoal-brewed tea in the afternoon (tea also in rooms). Breakfast is simple and tasty. No elevator. The owner's son speaks good English. Fun fact: the owner studied in Moscow and Minsk in the early 90s.