Chubu Fujikawaguchiko, Yamanashi
Fuji Saiko Onsen Izumi no Yu
富士西湖温泉 いずみの湯
Name in Japanese. Look for this on the sign, or show it to a taxi driver.
Allowed with conditionsStated by the facility
Day-trip onsen near Lake Saiko. Hot spring (spring details not checked)

Tattoo rule
Allowed with conditionsStated by the facility
What the official page says
日本の温泉文化の慣習に配慮し、 この時間帯以外はタトゥーをお持ちの方のご入浴をご遠慮いただいております 。ただし、 カバーシールでタトゥーを隠していただいた場合は、時間帯を問わずご入浴いただけます 。タトゥーの大きさによる制限は設けておりません。カバーシールは館内での販売を予定しております。
In short: Tattoos are allowed without covering during the facility's 'Tattoo Friendly Time'. At other times they must be covered with stickers.
Where it is
Chubu region, Yamanashi prefecture. About 49 km in a straight line from Hakone.
Advertisement
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.