Private bath available for day-use visitors or hotel guests to reserve
Mixed Bathing
Shared bathing area for all genders
Iwato bath mixed from 19:30 to 22:00 (clothing required)
Policies & Services
Dining
Restaurant or dining open to visitors (not just hotel meal plans)
Water treatment
Pure source-flow
from Article 18 disclosure
Added water
No
Reheated
No
Recirculated
No
Disinfected
No
Bath additives
No
曹
山の宿 新明館 源泉
Yama-no-Yado Shinmeikan Source
Operated by · 山の宿 新明館
Sampled at wellhead
曹
Bicarbonate
+ Sulfate · Chloride
Shinmeikan's source is a sodium-led blend of bicarbonate, sulfate, and chloride waters. Neutral pH keeps the feel soft on the skin, with the bicarbonate side smoothing the touch while chloride adds heat-holding salinity and sulfate contributes a quiet, mineral body. The wellhead runs at a hot 71.8 °C and reaches the baths as untreated free-flow — no dilution, no heating, no recirculation, no disinfection.
12. Shinmei-kan, Kurokawa Onsen (pt.1) ★★★
Stayed overnight. Located in the center of the village. Had dinner and breakfast, served in a separate space. The baths have their own schedules and details — see the schedule photo and individual bath descriptions. Ryokans Shinmei-kan, Yamamizuki, and Miyama Sanso share the same owners.
The main stone bath and cave bath are available for higaeri usually from 10:30 to 15:00, sometimes with a day off during the week. Included in the Kurokawa tegata. According to the website, the indoor bath may also be available for higaeri from 12:00 to 15:00.
The owner of this ryokan was Goto Tetsuya — the man who made Kurokawa Onsen village what it is today. He carved the cave onsen at his ryokan, designed and encouraged the village to use more rotenburo with natural atmosphere, took care of greening the village, and participated in introducing Japan's first onsen tegata in Kurokawa, which was later copied by other onsen towns across the country. He wrote a book about Kurokawa. He has since passed away.
Staff is mostly non-Japanese. The service team tried very hard, but the level of Japanese service is simply different. I also requested to see any artifacts or historical objects given the historical significance of this ryokan, but besides the book and an A4 printout of general points from the book, they couldn't offer anything. The non-Japanese staff tried reaching out to a Japanese and apparently senior staff member at the ryokan at the time, but that didn't help either. Overall, virtually no emphasis is placed on the history of the place beyond selling the book, though they could really do a great job of showcasing and leveraging that story.
Dinner and breakfast were double portions, delivered perfectly. The kaiseki dinner was in a separate atmospheric space, sitting on the floor (they offered mini chairs for those sitting uncomfortably, everyone declined of course). Breakfast was decent, medium portion relatively speaking, also in a separate room. Food was all good.
A powerful historical place. The onsens are great, each with their own unique features. Atmospheric inside, especially great in the evening both in the main bath and walking around outside to the onsens — doesn't feel like you're in the center of the village.
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12. Shinmei-kan, Kurokawa Onsen (pt.2) ★★★
About the onsens:
1. The main stone bath Iwato. It is located under a roof and behind a fence, with a fragment of a cave on the inner edge. In the evening, the bath especially reveals its atmosphere, but this is only available for guests staying overnight. There is a place to lie down. The water is clear, temperature 43-44°C. Bath schedule (for guests):
- 15:00 to 19:30: men's bath;
- 19:30 to 22:00: mixed bath, but clothing is required (single-use clothes sold for 500 yen at reception);
- 22:00 to 06:30: closed;
- 06:30 to 10:00: women's bath.
2. Cave bath. The cave is small, but you can actually walk around inside in a circle. The water is clear, temperature 43°C. Breathing is tolerable - there is a sauna effect.
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12. Shinmei-kan, Kurokawa Onsen (pt.3) ★★★
About the onsens:
3. Outdoor rectangular bath Kazenoyu. Located on an elevation and somewhat separate from the main ryokan buildings. The water is clear, temperature about 43°C.
Bath schedule (for guests):
- 15:30 to 23:00: private (reservation required at reception);
- 23:00 to 06:30: closed;
- 06:30 to 08:00: women's bath;
- 08:00 to 09:30: men's bath.
4. Public indoor old-style bath. The water is clear, temperature 40-41°C. It feels a bit stuffy inside.
5. Private indoor bath Kajika. The water is clear, early in the morning it was 50.5°C, had to dilute it. The air inside is very comfortable.
Bath schedule (for guests):
- 15:30 to 22:00: the leaflet stated that reservation is required (but I was not given the option to reserve);
- 22:00 to 10:00: available as a private bath on a "first come, first served" basis (no problem here, I used it freely in the morning without reservation).
09.04.2025 10.04.2025
