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

14:00–20:00

¥1,000

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

Cold BathYes

Cold water plunge bath, typically used after sauna

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

Mixed BathingNo

Shared bathing area for all genders

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· edited

49. Hôtel de Marronnier, Yunoyama Onsen ★★ I stopped by the tourist center in Yunoyama Onsen. I asked some old men about day-use bathing, and they immediately flagged down a slightly younger guy and told me to go with him, and that he would take me to the onsen (it turned out to be a hotel employee). The website says day-use bathing is from 14:00 to 20:00, but they let me in around 13:00. The day-use bathing fee is 1,000 yen, and a small towel and a large towel are included. 1. Indoor area. It was comfortable to breathe inside. 1.1. One large bath, 41 degrees. There is a jet area. 1.2. Sauna. 1.3. Cold bath. 1.4. Wooden bath (was not operating during my visit). 2. Outdoor area. Very strong Showa vibe: the beams above the baths are a bit worn, and from the edge of the balcony and from some angles you can see an abandoned building. 2.1. A shallow bath with hot water in rocks and water flowing down from above. Very nicely done, standing under the stream of water on the little balcony is a real pleasure. 2.2. A small outdoor bath in rocks. The temperature was a little lower than the main bath in the indoor area. It was windy, and bits of petals were floating around. The water in all the baths is clear, with a slight smell, but not sulfurous and not chlorine-like. A nice place. Recommended for day-use bathing when visiting Yunoyama, the view from the rotenburo really conveys the atmosphere of the settlement. 09.04.2024

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Last updated October 11, 2026