Hakone Onsen Sanso Nakamura

箱根温泉山荘なかむらはこねおんせんさんそうなかむら

Lodging

Hakone OnsenSengokuhara Onsen

Kanto·Kanagawa

0460-84-6012 hpdsp.jp

Day Use

Yes

10:00–15:00

Day-use bathing is temporarily limited to a single 10:00-15:00 window to avoid crowding, with last entry at 14:00.

¥1,000

The day-use rate covers one 1-hour bathing session, with a 150-yen bathing tax (nyuto-zei, 入湯税) added on top; the day-use soba lunch is currently suspended.

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathNo

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaNo

Dry heat sauna room

Capabilities

Mixed BathingNo

Shared bathing area for all genders

Baths are gender-separated and swapped daily by reservation status, not mixed.

Policies & Services

TattooYes

Allows entry with visible tattoos

Unverified

WashingYes

Shower, wash stations, soap and shampoo provided

Listed under the site's room/facility amenities list; corroborated by a third-party listing describing shampoo/rinse/body soap as bath amenities.

TowelsYes

Towels available to rent or borrow

Rest AreaYes

Relaxation space for after bathing

ParkingYes

On-site or nearby parking available

Water treatment

Pure source water· 源泉かけ流し (gensen kakenagashi)

from Article 18 disclosure

Added water
No
Reheated
No
Recirculated
No
Disinfected
No
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 Blended Spring (Line 2 / Line 3)

Operated by · 箱根温泉山荘なかむら

Mixed source

酸

Acidic

+ Sulfate · Chloride

Color: slightly cloudy white
Taste: not recorded
Odor: faint hydrogen sulfide

Hot source · 61°CUltra-acidicHigh silica

Known good for

Skin conditionsatopic skin, eczema
Circulationtired legs
Aches & jointsstiff shoulders

Sensitive-skin cautionbroken or dry skin

A steam-generated acidic spring fed by the volcanic fumaroles of Owakudani, leaning to sulfate and chloride. At pH 2.1 it is strongly acidic, sharp enough to prickle slightly on the skin, and arrives slightly cloudy-white with a faint hydrogen sulfide note. A generous 157 mg/kg of metasilicic acid leaves a thin silica film that smooths the skin.

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

Forest

About

The bath here is a cloudy, strongly sulfurous onsen kept flowing straight from the source, split between two indoor rooms, Genji-no-yu (源氏の湯) and Kiritsubo-no-yu (桐壷の湯), that swap between men and women depending on the day's bookings. There's no outdoor bath, but a wide window in the bathroom looks out over a bamboo grove, so soaking still feels like it's outdoors. The lodge itself is an old, quiet place tucked among the trees above Sengokuhara, more a rustic mountain retreat than a polished ryokan, and it's that milky sulfur water people keep coming back for.

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Sergey M

2 years ago

170. Hakone Onsen Sanso Nakamura Visited for day-use bathing for 1100 with a towel (listed hours 10:00 to 15:00). Used the indoor bath with a bamboo view through glass. Fixtures are a bit worn. Breathing inside is tolerable. Water is cloudy white with fine white calcium deposits, very faint sulfur smell. Temperature is hot. When I was leaving, a dog from the upper floor came to see me off. If you're hanging out in northern Hakone and it's convenient, worth visiting for the water. The bamboo view through glass isn't super impressive, but it's still a plus. And the dog is great.