Hôtel de Marronnier Yunoyama Onsen

オテル・ド・マロニエ湯の山温泉オテル・ド・マロニエゆのやまおんせん

Mountain-view baths at a quiet Yunoyama Onsen resort hotel

Lodging

Kansai·Mie

059-392-3210 marronnier.info

Day Use

Yes

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 BathYes

A private bath you can reserve for yourself or your group

Reservation required.

Room OnsenNo

Private onsen bath in guest rooms, for overnight guests only

The room-equipment list shows only a plain bath (some rooms have none); the site's separate bathing-facilities page enumerates all baths (rotenburo, indoor, hinoki, utaseyu, sauna, kashikiri) as communal-only, with no room onsen mentioned.

Mixed BathingNo

Shared bathing area for all genders

Every bath (rotenburo, indoor bath, utaseyu, sauna) is described as one-each for men and women, with no mixed bathing mentioned.

Policies & Services

TattooNo

Allows entry with visible tattoos

WashingYes

Shower, wash stations, soap and shampoo provided

TowelsYes

Towels to rent or borrow at the desk

オテル・ド・マロニエ湯の山

Hôtel de Marronnier Yunoyama

ラ

Radon

+ Simple

Sodium Bicarbonate-Fluoride spring

Composition fingerprint0.1 g/kg dissolved · Hypotonic

Na⁺90

HCO₃⁻41

F⁻28

Cl⁻14

◀ CationsAnions ▶

Sodium Na⁺: salt's cation — pairs with chloride to make the water salty.
Bicarbonate HCO₃⁻: "soda" — softens skin, leaves it smooth.

Known good for

Smooth skindry, rough skin
Recoveryfatigue, stress

Classified as an alkaline simple weak-radon spring — a gentle, lightly mineralized water of the simple-thermal type. With dissolved solids of only 140 mg/kg it sits at the light end of the scale and feels soft on the skin. Being alkaline, it carries the slippery touch of Japan's beauty-water family, even though its mineral content is modest.

Analyzed Apr 23, 1992·三重県衛生研究所

Explore the water

Views

Mountains

Highlights

Utaseyu

About

Hotel de Marronnier is a resort hotel at Yunoyama Onsen, at the foot of the Suzuka mountains. Baths are split by gender; each side has an indoor bath, an open-air bath, a sauna, and an utaseyu (打たせ湯), a standing bath under a falling stream. A private bath is also available by reservation. The water is colorless and clear, with a light, smooth feel on the skin, and the open-air baths look out over mountain scenery that changes through the seasons. It runs as a members' resort but also takes general bookings, and guests describe it as a quiet place to unwind. The onsen carries an old local nickname, Shika-no-yu (鹿の湯), from a legend of an injured deer that healed by soaking in the water here.

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2 years ago

49. Hôtel de Marronnier, Yunoyama Onsen Stopped by the tourist center in Yunoyama Onsen. Asked the old guys about higaeri — they immediately flagged down a younger man and told me to go with him, that he'd drive me to the onsen (turned out to be a hotel employee). On the website, higaeri is listed from 14:00 to 20:00, but they let me in around 13. Higaeri price is 1000, includes small and large towels. 1. Indoor baths: 1.1. One large bath, 41°C. Has a jet zone. 1.2. Cold bath. 1.3. Wooden bath (wasn't working when I visited). 1.0. Breathing is comfortable. There's a sauna. 2. Outdoor zone: 2.1. A shallow bath with hot water set in stones with water flowing from above. Really nicely done — standing under the stream of water on the balcony is a real pleasure. 2.2. A small outdoor stone bath. Temperature slightly below the main indoor bath. It was windy — cherry blossom petals were floating in the water. 2.0. The outdoor zone has a Showa vibe: the beams above the baths are a bit worn, and from the edge of the balcony and certain angles you can see an abandoned building. Water in all baths is clear, there's a slight smell (not sulfuric, not chlorine). Great place. If you're visiting Yunoyama, I highly recommend going at least for higaeri.

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Last updated September 19, 2026