宿に確認したところ　問題ないそうです
実際に問題なくはいれました

結構はいってますが全然問題ありませんでした

"There is no reason to refuse tattoo at our hotel, so there are no reasons for refusing, but in Japan there may be customers who still feel uncomfortable with tattoo.You can use it for free at the hotel We have 2 reserved baths and I would like to ask you to use it in a range that will not cause trouble for other customers. "