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Takamiya Ryokan Miyamaso

深山莊 高見屋

Lodging
Tohoku·Yamagata

Day Use

No

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

Bathing Arrangements

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

Policies & Services

WashingYes

Shower, wash stations, soap and shampoo provided

高見屋2号源泉

Takamiya No. 2 Spring

Operated by · 株式会社高見屋旅館

Acidic
+ 含硫黄泉 · Sulfate · Chloride
Color
colorless and clear
Taste
strongly astringent
Odor
strong hydrogen sulfide

Hydrogen-Aluminum Sulfate-Chloride spring

pH 1.9AcidicHot source · 50°CUltra-acidicSulfur-richHigh silica
Composition fingerprint2.3 g/kg dissolved · Hypotonic
H⁺34
Al³⁺30
Mg²⁺15
SO₄²⁻62
Cl⁻23
HSO413
CationsAnions
Hydrogen H⁺
makes the water acidic — sharp and bactericidal.
Sulfate SO₄²⁻
"gypsum / Glauber's salt" — vessels and wound healing.
Known good for
  • Skin conditionsatopic skin, eczema
  • Circulationtired legs
  • Aches & jointsstiff shoulders
  • Sensitive-skin cautionbroken or dry skin

A strongly acidic, sulfur-bearing spring at Zao Onsen: aluminium and sulfate lead the mineral profile, with a chloride edge alongside. The water is colorless and clear but tastes sharply astringent and carries an unmistakable rotten-egg note of H₂S — acidic enough to prickle on contact with the skin. A generous 223.1 mg/kg of metasilicic acid leaves a smoothing silica film once the sting fades. The house guide printed for guests warns bathers to remove all jewellery and metal before soaking, since this water corrodes and discolours metal.

Sampled at wellhead·Analyzed Jul 21, 2015·日本環境科学株式会社·Cert no. 日環科 第317号

Explore the water

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3.0

3 reviews

from 1 reviewer

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Sergey M
7 months ago· edited

761. Takamiya Ryokan Miyamaso, Zao Onsen, Yamagata (pt.1) ★ A rare traditional large ryokan in Zao Onsen. It is part of the Takamiya Hotel Group and gives you access to free day-use bathing at 7 other hotels in the group (some have gender-swapped bath schedules, so even more baths are available). At the same time, you cannot use day-use bathing to enter Ryokan Miyamaso itself from the other hotels in the group. In the morning there is a gender swap for the baths between men and women. There is a private bath for ¥3000 (I did not use it). I stayed overnight. I chose the double meal plan (breakfast and dinner), served in a separate room, and the food itself was solid overall. The unusual part was ordering paid drinks through a tablet. During the snowy season, the room rate was overpriced. There were a lot of staff at the hotel, most of them Japanese, and most of them spoke good English. The room was traditional Japanese, but instead of futons it had thick mattresses. For winter locations, I consider that a plus. The temperature in winter was comfortable, not cold. There were some issues with the doors in the room and the bedroom, they got stuck, but nothing serious. A decent ryokan, with many different baths, but the baths themselves were not that impressive. In season, the price is high. The day-use bathing option for visiting other onsen at Takamiya Hotel Group hotels is great, but other hotels in the group offer the same option and cost much less. If you specifically want a traditional ryokan in Zao, this looks like one of the best options in the village. But if you compare it broadly with ryokan across the country, there are many more interesting options. 09.01.2026 10.01.2026

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Sergey M
7 months ago

761. Takamiya Ryokan Miyamaso, Zao Onsen, Yamagata (pt.2) ★ About the onsen: 1. First floor. First set of baths, alternating between men and women. 1.1. Indoor bath. The water is acidic, cloudy, bluish-white. Temperature: 44.5. Breathing inside is fine. 1.2. Outdoor wooden barrel on the balcony. No view. The water is acidic, cloudy, bluish-white. Temperature: 44. 2. Second floor. First set of baths, alternating between men and women. I visited this set in the evening, but it is better to go in daylight, the view greatly enhances these baths. 2.1. Indoor bath. The water is acidic, cloudy, bluish-white, but less concentrated than usual in Zao Onsen. Temperature: 44.5. Breathing is good, the bath is sort of semi-indoor. 2.2. Small semi-open-air bath. View of the snow, and somewhere below you can hear a river. The water is clear with a bluish tint, with lime on the bottom. Temperature: 44. 3. First floor. Second set of baths, alternating between men and women. 3.1. Indoor bath. The water is acidic, cloudy, bluish-white. Temperature: 42.5. Breathing inside is comfortable. 4. Second floor. Second set of baths, alternating between men and women. 4.1. Indoor bath. The water is acidic, cloudy, bluish-white, but less concentrated than usual in Zao Onsen. Temperature: 45.5. 4.2. Outdoor wooden barrel. No view. The water is acidic, cloudy, bluish-white. Temperature: 44.5. 09.01.2026 10.01.2026

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Sergey M
7 months ago· edited

Double meals (dinner and breakfast) at Takamiya Ryokan Miyamaso, Zao Onsen 09.01.2026 10.01.2026

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Onsen OniSM@S

Last updated July 30, 2026