I'm planning to visit Kawaguchiko in a group of four, but the hotel we've booked doesn't have a private onsen. We'd prefer to use a private onsen as one of us has a tattoo and we're two couples, so ideally we'd like to be able to book an onsen for each couple. Looking online, it seems like it might not be possible to book a private onsen if you're not staying at the hotels that have them? I've tried googling day-use private onsen, but I've not had much luck.
Am I just searching poorly, or is there no onsen in Kawaguchiko that will let us reserve a private onsen just for one evening?
by Rez-Ipsa