Chugoku Tottori
Marumo Ryokan
丸茂旅館
Name in Japanese. Look for this on the sign, or show it to a taxi driver.
Private bath onlyStated by the facility
Onsen hotel or inn. Hot spring (spring details not checked)

Tattoo rule
Private bath onlyStated by the facility
What the official page says
タトゥー・刺青を入れてますが大浴場に入れますか いいえ。タトゥーや刺青のある方は家族風呂をご利用いただけます。大浴場はご利用できません。
In short: Guests with tattoos can use a private bath.
Where it is
Chugoku region, Tottori prefecture. About 145 km in a straight line from Osaka.
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Rules can change. Check the official page on the day you go. Any paid link is labelled next to the button. We have not visited this bath ourselves.