Be aware that the host will ask for your passport information (number and scan). Naomasa's airbnb is a nice appartment, with access to a hot bath (onsen) on the roof of the building (great viewpoint). Very clean and very quiet place, it was great to rest there. The bedding is futons, which may feel hard for people not used to having a hard bedding but we found them comfortable. I didn't give 5 stars because our experience felt overall a bit too complex, as Naomasa and Jun really provided us with a lot of instructions and details which can feel a tad overwhelming.