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Oedoonsen Monogata Masuya

大江戸温泉物語 ますやおおえどおんせんものがたり ますや

Panoramic open-air baths at a group ryokan in Naruko Onsen

Lodging

Day Use

Yes
07:00–10:00, 15:00–00:00

On Tue and Thu, day-use bathing starts from 15:00 due to cleaning (same as the normal 15:00 opening).

¥1,070

Weekday adult 1,070 yen; Sat/Sun/holiday 1,320 yen; peak days 1,520 yen. Elementary school 600-810 yen. Under 3 free. Towel rental 330 yen extra. Tue/Thu cleaning days: from 15:00. Last entry 22:00.

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaNo

Sauna room of any kind

Bathing Arrangements

Private BathNo

A private bath you can reserve for yourself or your group

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooWith Conditions

Allows entry with visible tattoos

Allowed only if fully covered by facility-designated cover sticker (paid)

DiningYes

A restaurant or dining room open to visitors, not only meals for overnight guests

WashingYes

Shower, wash stations, soap and shampoo provided

TowelsYes

Towels to rent or borrow at the desk

ParkingYes

On-site or nearby parking available

陽泉1号

Yousen No. 1

Operated by · 大江戸温泉物語 鳴子温泉 ますや

塩
Chloride
Color
colorless and transparent
Taste
slightly sweet
Odor
faint hydrogen sulfide note
pH 8.3Weakly alkalineHot source · 100°CSulfur-rich
Known good for
  • Warmingcold sensitivity
  • Skin conditionsatopic skin, eczema
  • Circulationtired legs
  • Sensitive-skin cautionbroken or dry skin

A scalding 100 C wellhead places this among Japan's hottest natural sources, a sodium chloride spring of the salty, heat-retaining family with a soda-bicarbonate undertone in its legacy name. Weakly alkaline and soft on the skin, the water emerges colorless and transparent with a slightly sweet finish and a faint hydrogen sulfide note. Conductivity of 567 mS/m and evaporation residue of 3,521 mg/kg confirm a richly mineralized brine that leaves a long-lasting warmth on the body.

Sampled at wellhead·Analyzed Feb 13, 2019·公益財団法人 宮城県公害衛生検査センター·Cert no. 公衆第1127号 (宮城県知事指令 宮環第1号)

Explore the water

Views

Mountains

About

Part of the Ooedo Onsen Monogatari (大江戸温泉物語) chain, Masuya sits in the Naruko Onsen hot spring town in Miyagi. The two large indoor baths, Tenma (天馬) and Tensho (天翔), swap between men and women each week, so you get a different bath depending on when you visit. The open-air bath looks out over the Naruko onsen valley. The water is a sulfur spring, faintly characteristic of Naruko. Day use is welcome without a reservation, and guests receive a complimentary ticket to the nearby public bath Taki-no-yu (滝の湯).

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Sergey M
2 years ago· edited

218. Oedoonsen Monogata Masuya, Naruko Onsen, Miyagi I went for a day trip using 4 stamps on the local tegata, listed as 14:00 to 18:00. Afterward, I saw in the photos that there was some kind of great bath upstairs with a view, but I ended up in the not-so-interesting ones. It is unclear whether it changes for men and women, whether I simply missed it, or whether it is unavailable for day-trip visitors, or whether the staff did not point it out. The photos of the baths I visited from the internet match. Inside, there is a main bath with a view of the forest, but through reinforced glass. The water is clear, and the temperature is around 40. It is comfortable to breathe inside. There is also a round herbal foot bath, where a crowd of young Japanese people was sitting. The outdoor bath is small, has no view, the water is clear, and the temperature is 42. If you do not get into that large outdoor bath from the hotel photos, you can skip it. If the large bath is actually available, then the place will look interesting. 05.11.2024

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Last updated October 12, 2026