Keith Haring’s Museum and hotel with the real hot spring
2 hours 30 mins from Shinjuku to Kobuchizawa station by Chuo line.
Usually tattoo is not allowed at a public bath, swimming pool, gym etc. in Japan.
Based on some users’ reports, you can go to this public bath with tattoo. Yet, no guarantee.
If you go there, please share your review.
Note: The photo is a generic.