Travel Suzaka, Nagano (長野県須坂市) – Iwanoyu ryokan (花仙庵仙仁温泉岩の湯) Mixed-gender Cave Bath (男女同浴洞窟風呂) 2024 Nov. 27 December 14, 2024
Travel Kurokawa Onsen, Kumamoto (熊本県黒川温泉) – Gosho Gekkoju (御処 月洸樹) two private rental Onsen baths (貸切温泉風呂) May 1, 2022
