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Shinanoki Ichinoyu

仙石原品の木一の湯せんごくげんぴんのきいちのゆ

Hakone ryokan with two distinct springs and private outdoor baths

Lodging

Day Use

Yes
13:00–20:00
¥1,400

Adult 1,400 yen (tax incl.); child (4-12) 700 yen. Free face towel and bath towel rental. Last entry 19:30.

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaYes

Sauna room of any kind

Bathing Arrangements

Private BathNo

A private bath you can reserve for yourself or your group

Room OnsenYes

Private onsen bath in guest rooms, for overnight guests only

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooNo

Allows entry with visible tattoos

Tattoos not allowed in the public baths. The private barrel sauna is an exception — guests change privately so tattoos are permitted there.

KidsWith Conditions

Welcomes children and families

Children welcome; mixed-gender bathing with children permitted up to preschool age only. Children under 18 not allowed in the barrel sauna.

DiningYes

A restaurant or dining room open to visitors, not only meals for overnight guests

WashingYes

Shower, wash stations, soap and shampoo provided

TowelsYes

Towels to rent or borrow at the desk

ParkingYes

On-site or nearby parking available

Water treatment

Treated and recirculated
from Article 18 disclosure
  • Added water
    Yes
  • Reheated
    Yes
  • Recirculated
    Yes
  • Disinfected
    Yes
    塩素系薬剤
  • Bath additives
    No

大涌谷温泉 蒸気造成混合泉 2号線(仙石原方面)、3号線(強羅方面)

Owakudani Onsen Steam-Generated Blend (Line #2 Sengokuhara, Line #3 Gora)

Mixed source

酸
Acidic
+ Sulfate · Chloride
Color
slightly cloudy white
Taste
not recorded
Odor
faint hydrogen-sulfide note
Hot source · 61°CUltra-acidic
Known good for
  • Skin conditionsatopic skin, eczema
  • Circulationtired legs
  • Aches & jointsstiff shoulders
  • Sensitive-skin cautionbroken or dry skin

An acidic calcium sulfate-chloride spring fed by steam-generated condensate from Owakudani. At pH 2.1 the water is sharply acidic — strong enough to sting slightly on contact — and carries a faint milky cloudiness with a whiff of hydrogen sulfide. The 60.6 °C source sits squarely in the family of acidic springs long associated with stubborn skin conditions.

Analyzed Sep 28, 2018·神奈川県温泉地学研究所·Cert no. 神奈川県知事登録第1号

Explore the water

Views

Mountains

About

Two separate springs feed the baths here: a sulfurous rotenburo (露天風呂) drawn from the Owakudani (大涌谷) source, and a smooth alkaline indoor bath from a different spring. Most guest rooms have their own private outdoor tub. A private barrel sauna with outdoor cooling area rounds out the facilities. Day visitors can use the communal baths without staying.

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Sergey M
2 years ago· edited

174. Shinanoki Ichinoyu, Hakone Located in the northern part of Hakone. The day-use price is 1400 with a towel set, and with the receipt you can visit the other Ichinoyu baths in Hakone for 0 during the day. Day-use is listed from 13:00 to 20:00. The indoor bath has clear water, with no noticeable smell. The temperature is hot+. It is comfortable to breathe inside. The outdoor rectangular bath. The water is a little cloudy and has a very small amount of lime. The temperature is hot+. A weak view of the fence wall and treetops. With the pass, it is convenient to stop in from another nearby Ichinoyu. I would not make a special trip just for it. 11.07.2024

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Last updated October 11, 2026