Ohtaki-no-yu
大滝乃湯
Does Ohtaki-no-yu allow tattoos? Yes!
The bath people come to Kusatsu to do properly: the awase-yu, a row of wooden tubs run at rising temperatures that you work through in order, a few minutes in each, ending in water hot enough to concentrate the mind. It is the one of the three that asks something of you.
No restriction, and nothing to cover. The company that runs Kusatsu’s three public baths answers this in its own FAQ: it does not refuse admission or bathing to people with tattoos, and asks only that everyone keep to bathing manners.
What happens when you arrive
Check in and go to the bath: no seal to buy, no measuring, nothing to declare.
How we know
Confirmed Confirmed from official site (the operator's own FAQ, covering all three baths)
Read on: onsen-kusatsu.com/ohtakinoyu/faq/
三湯（大滝乃湯、御座之湯、西の河原露天風呂）では、刺青（タトゥー）のある方の入館、入浴を特にお断りはしておりません。訪日外国人旅行者も含めまして、多種多様な文化的背景を受け入れると共に、どなたでもマナー遵守の上で草津温泉を楽しんでいただきたいと思っております。
The operator’s own wording on that page. Nothing here needs showing at a desk — but if anyone does ask, this settles it without either of you needing the other’s language.
Best for: The awase-yu — five wooden tubs at rising temperatures, worked through in order
09:00–21:00, last admission 20:00. Adults 1,200 yen, children 600 yen.
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