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Ryokan Hakone Ginyu

箱根吟遊はこねぎんゆう

Lodging

Day Use

Yes
10:00–20:00

Reception runs 10:00 to 20:00, but the last reception for a treatment booking is 18:00.

¥1,700

Day-trip access is only available by booking a GinyuSpa treatment; there is no standalone bathing. Treatment guests can add 30 minutes in the source-fed private open-air bath for 1,700 yen (staying guests get this soak free).

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaYes

Dry heat sauna room

Capabilities

Private BathYes

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

Room OnsenYes

Private onsen bath in guest rooms, for overnight guests only

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

KidsYes

Welcomes children and families

ParkingYes

On-site or nearby parking available

箱根吟遊(月の湯)

Hakone Ginyu (Tsuki-no-yu)

Operated by · 箱根吟遊

Chloride
Color
colorless and transparent
Taste
not recorded
Odor
not recorded

Sodium Chloride spring

Hot source · 53°C
Composition fingerprint1.2 g/kg dissolved · Hypotonic
Na⁺84
Cl⁻82
CationsAnions
Sodium Na⁺
salt's cation — pairs with chloride to make the water salty.
Chloride Cl⁻
table-salt anion — coats the skin and holds heat in.
Known good for
  • Warmingcold sensitivity
  • Aches & jointsstiff shoulders
  • Smooth skindry, rough skin

A sodium-dominant chloride spring (Na 84%, Cl 82% of ions) — the classic salty, heat-retaining style of Japanese chloride water. Hot at 52.6 C and weakly alkaline at pH 8.4, it sits firmly in Japan's beauty-water family. Moderately mineralized at about 1,162 mg/kg dissolved solids, with an unusually generous 191 mg/kg of metasilicic acid that leaves a thin silica film and a noticeably smoother skin feel.

Explore the water

Views

Mountains
River
Forest

Highlights

Jet Bath

About

All twenty rooms here come with their own open-air onsen bath on a private terrace, and the view shifts by floor between the Hayakawa valley below and the Hakone mountains beyond. The ground-floor Tsuki (月) rooms go a step further with a jetted rock bath tucked among trees for extra privacy. The water is only faintly salty, warms you through, and leaves the skin feeling smooth rather than tight. Beyond the rooms, a communal bathhouse split into two zones, Tsukishiro (月代) and Tsukine (月音), swaps between men and women on a schedule; each side has a rock bath, an open-air bath, and a sauna facing the mountains. A separate spa annex, GinyuSpa, keeps its own source-fed private open-air bath for guests booked in for a treatment, and after hours the whole pavilion can be rented out for a wedding or a proposal. Ginyu leans into a Bali-influenced design, but the corridors are still laid in tatami and guests pad through them in white tabi, an old ryokan habit underneath the resort look.

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Reserve or check availability on a booking site.

Irina

1 year ago

A bit of luxury content from Hakone. A Bali-style ryokan. They focus on aroma oils and herbal teas. There's a spa (the oil massage was really good), all rooms come with a rotenburo, but there's also a shared onsen. The water is alkaline but not very soapy. They have their own cosmetics line, and the shared bath has scrubs. The shared rotenburo has a jacuzzi with mountain views, plus an indoor bath and sauna.

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Last updated July 16, 2026