Tattoo friendly onsen in Ginzan

Fujiya

藤屋

Every bath is private. Fujiya's own site says so in as many words: five differently themed baths, all of them private spaces, open 24 hours, usable as many times as a guest likes without booking. There is no shared bath to have a policy about.

藤屋の温泉は、５つの趣きのことなるお風呂となっており、５つすべてがプライベート空間の温泉のため、ご希望の時間に誰にも邪魔されないプライベートな温泉をご堪能いただけます。

Best for: Five private baths on a 24-hour, no-reservation basis, in an eight-room wooden inn at the center of the street

Baths named Bamboo, Cedar, Sky, Stone and Underground. 大正浪漫 stained-glass and bamboo-filtered wooden building, eight rooms, all facing the Ginzan river.

Hatago Itoya

旅籠いとうや

Both of the inn's baths are private. The 1st-floor indoor bath and the 2nd-floor snow-viewing bath are each used as a locked private room; the inn's own site says outright there is no gender-separated bath, and when a bath is free you lock the door from inside and it is yours.

一階には内湯、二階には雪見風呂と、それぞれを貸切風呂としてご利用いただけます。※男女別のお風呂はなく、空いていれば中から鍵をしていただき貸切にてご利用いただけます。

Best for: A four-room inn where neither bath is ever shared, snow-viewing bath on the upper floor

Limited to four groups a day. Slightly milky, faintly sulfurous water, ReFa shower heads.

Nagasawa Heihachi

旅館 永澤平八

Two private baths, free to every guest for the whole stay with no reservation and no extra charge, on top of a separate shared indoor bath. The inn's own site is explicit that staying guests can use the private baths freely at any time during their stay, which settles the question regardless of what the shared bath's policy is.

貸切半露天風呂は、宿泊者の方は滞在中いつでもご自由に入浴できます。

Best for: A 1925 wooden inn where the two private baths, one semi-open-air, cost nothing extra and need no booking

Limited to seven groups a day. The shared indoor bath (内湯) is gender-fixed, no swap. Source water at 66°C, sometimes diluted for temperature.

Ginzanso

仙峡の宿 銀山荘

Some rooms come with their own semi-open-air reclining bath on the source spring, in addition to the hotel's shared men's and women's baths. Book one of those rooms and the shared bath's policy, unpublished, does not apply to you.

Best for: The town's largest bath and, in the rooms built for it, a semi-open-air bath of your own over the river

40 rooms, the biggest inn in Ginzan and the most modern in build. Shared baths have both an indoor and an open-air section, men's and women's, unpublished tattoo policy.

Kozankaku

古山閣

The main building has a shared indoor bath on the first floor and a private bath on the third, and the inn's own site says the third-floor private bath needs no reservation: use it whenever it is free. That private bath alone is enough, whatever the shared bath's policy turns out to be.

本館1階に内風呂、3階に貸切風呂があります。本館貸切風呂は予約不要で空いているときに自由に入れます。

Best for: A historic wooden ryokan with a private third-floor bath open to any guest, no booking needed

Shares its baths with CLANUOVA, the modern annex next door under the same ownership.

CLANUOVA

クラノバ

CLANUOVA has no bath of its own: guests use the baths in Kozankaku next door, the same inn under the same ownership, where the third-floor bath is private and needs no reservation. The private-bath route applies here exactly as it does at Kozankaku.

隣の本館のお風呂をご利用下さい。本館1階に内風呂、3階に貸切風呂があります。本館貸切風呂は予約不要で空いているときに自由に入れます。

Best for: A modern Western-style annex with an Italian dinner, using Kozankaku's unbooked private bath next door

Opened 2017, six Western-style rooms, Italian-course dinner. Shares Kozankaku's address and baths.