Nanasawaso

七沢荘 · Nanasawa Onsen

Visited by the editor · No.9OK in a private bath (day visit)OK if covered (overnight)

Can you bathe here with a tattoo?

This is the question we built the site around, so we answer it per situation.

Visiting for the day

Yes, if you take a private bath

Tattoos are not allowed in the shared baths. A private (kashikiri) bath is available, which usually means you can still bathe — but this has not been confirmed with the facility.

Not confirmed by the facility. We worked this out from the bath layout, so please check before you go.

Source: official website · checked 2026-08-29

Staying overnight

Yes, if you cover it up

Tattoos must be covered with a patch in the main baths. A private or in-room bath is also available.

Source: official website · checked 2026-08-29

How it scores

Every onsen on this site is scored on the same five things.

Rated from research

Water4

Comfort4

Setting4

Access3.5

△Somewhere to sit — A small rest area

×Anything else nearby — Nothing else around

A seven-room ryokan in the Nanasawa hills above Atsugi, built around a strongly alkaline 'beautiful skin' water that the owners call the most concentrated in Kanagawa, with the private family bath the only one fed undiluted straight from the spring. Day-use admission is capped at two hours and the open-air bath makes no claim to a view, so this is a trip made for the water rather than the scenery.

Scored from official photos, maps and transport information — not from a visit.

The baths

Indoor bath

Separate men's and women's indoor baths plus a lie-down bath. Strongly alkaline 'beautiful skin' water that the ryokan says is the most concentrated in Kanagawa. A 5-person sauna and two barrel-shaped cold tubs fed with undiluted source water sit alongside; in winter the cold tub can drop into single digits.

Open to day visitors

Open-air bath

An open-air bath in each of the men's and women's sections. Under-3s and anyone in nappies or training pants may not use the large baths at all, at any age.

Open to day visitors

Private (kashikiri) bath

Private family bath, 4,400 yen for 45 minutes on top of admission, minimum 2 adults, reservation essential. Day visitors can book it for 10:00-19:00; slots before 15:00 open a week ahead, slots from 15:00 open the day before. This is the only bath fed with undiluted source water straight from the spring, so it feels more slippery than the large baths. Overnight guests are given priority.

Open to day visitors

A private bath means nobody else is in the water with you — often the practical answer if the shared baths are closed to tattooed guests.

Practical details

Day visits: Yes — you can bathe without staying overnight.
8:00-19:30 (reception until 19:00); admission is limited to 2 hours per visit
Day visit price: ¥1,100
Revised 1 April 2026. Weekday adult 1,100 yen / child (3+) 700 yen; Saturdays, Sundays and public holidays 1,700 / 800 yen; designated season dates 1,900 / 1,000 yen. Admission covers the large baths, open-air bath, sauna and foot bath and is capped at 2 hours from entry; the private family bath is charged separately. Multi-visit tickets were discontinued on 31 March 2026. Towels are extra (face towel 220 yen, towel set 550 yen, yukata rental 770 yen). Closing days are irregular - generally Thursdays plus one Wednesday a month - so check the official calendar.
Staying overnight: Yes
Getting there: Reachable by public transport without a car. From Hon-Atsugi Station (Odakyu Odawara line) walk to the Atsugi Bus Center and take a bus bound for Nanasawa from platform 9; get off at Hirosawaji-Onsen-Iriguchi (two stops past Nanasawa-Onsen-Iriguchi) and walk 7-8 minutes following the inn signboard. By car it is about 10 minutes from Isehara-Oyama IC on the Shin-Tomei or 25 minutes from Atsugi IC on the Tomei; three free car parks.
Official website: www.nanasawasou.jp

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