Nanasawasou

♨️A 7-room ryokan an hour from Tokyo with pH 9.78 'beauty' hot spring water

Kanagawa · Nanasawa Onsen Nanasawaso

1

60 years of history, reborn as 7 rooms

• 🏮Marking its 60th year, the inn underwent a major renovation in 2023, shrinking from over 40 rooms to just 7.
• 🪨The entrance's symbol stone, a roughly 13-ton Sanbaseki rock, was brought from the Kanna River in Gunma 60 years ago, and the building was laid out around it.
• 🌌Its motto, 'an inn that draws energy from the cosmos and the earth', refers to sun-grown food and earth-heated hot spring water.

2

A 'beauty bath' among Japan's 100 best springs

• ♨️Drawn from 600 m underground, the water is a strongly alkaline simple spring at pH 9.78, colorless and silky on the skin.
• ✨Containing metasilicic and metaboric acid, it is known as a beauty bath, and Nanasawa Onsen is listed among Japan's 100 best hot springs.
• 🛁The men's and women's baths each have an indoor and open-air bath, plus a lie-down bath.

3

Private bath, sauna and foot bath

• 🔒The free-flowing private family bath feels even silkier than the main baths; it is reservation-only for 2 adults or more, 4,400 yen for 45 minutes (admission extra).
• 🧖A small sauna for about 5 people is paired with a cold plunge of untreated spring water (the women's sauna was announced as out of use from September 2026).
• 🐟The courtyard foot bath features doctor fish in summer and hot spring water in winter.

4

Main building rooms renovated in 2023

• 🛏️The 3 main-building rooms, renovated in August 2023, have two semi-double beds and can sleep up to 4 with futons.
• 📐At 37-41 m², they come with a shower room, washlet toilet and humidifying air purifier, with mountain views including Mt. Kanegatake.
• ♿The Uguisu room is barrier-free with handrails and no steps, accessible by wheelchair, and closest to the dining hall and baths.

5

Retro annex rooms and a pet room

• 🏯The annex keeps the pre-renovation atmosphere, with standard 8-tatami Japanese rooms of 25-35 m².
• 🐕Room 101 is a 40 m² pet-friendly room with a small-dog cage and bowls, opening directly onto the garden.
• 🚿No room has its own bath, so guests use the main baths; some plans include the private bath.

6

Kaiseki with local seasonal produce

• 🍲From autumn to winter, the highlight is boar hotpot in a secret miso broth, made with meat prepared by local hunters.
• 🐟Summer brings ayu sweetfish, a local specialty once presented to the shogunate, while spring courses feature bamboo shoots, bracken and other mountain vegetables.
• 🍚Rice is Atsugi's Kanagawa-brand 'Seseragi-mai Harumi', and the pork is Kiyokawa Megumi Pork.

7

Facilities

• 🛍️The front hall shop sells original bath salts and sake from Kiganei Shuzo, a local brewery with 200 years of history.
• 🍽️The Sengen dining hall, with its sloped ceiling and solid wood, also serves coffee and a soft-serve ice cream developed with a local dairy farm.
• ⛩️The hall in front of the baths is furnished with Balinese pieces, and a Seven Lucky Gods shrine built in 2004 stands on the grounds.

8

Access

• 🚃About 1 hour from central Tokyo and about 50 minutes from Yokohama, billed as the hot spring village closest to the city.
• 🚌From Hon-Atsugi Station (Odakyu Line), take the bus bound for Nanasawa from stop 9 at Atsugi Bus Center, get off at Kotakuji Onsen Iriguchi, and walk 7-8 minutes.
• 🚗About 10 minutes from Isehara-Oyama IC on the Shin-Tomei Expressway and about 25 minutes from Atsugi IC on the Tomei Expressway.

3

Private bath, sauna and foot bath

• 🔒The free-flowing private family bath feels even silkier than the main baths; it is reservation-only for 2 adults or more, 4,400 yen for 45 minutes (admission extra).
• 🧖A small sauna for about 5 people is paired with a cold plunge of untreated spring water (the women's sauna was announced as out of use from September 2026).
• 🐟The courtyard foot bath features doctor fish in summer and hot spring water in winter.

4

Main building rooms renovated in 2023

• 🛏️The 3 main-building rooms, renovated in August 2023, have two semi-double beds and can sleep up to 4 with futons.
• 📐At 37-41 m², they come with a shower room, washlet toilet and humidifying air purifier, with mountain views including Mt. Kanegatake.
• ♿The Uguisu room is barrier-free with handrails and no steps, accessible by wheelchair, and closest to the dining hall and baths.

Show more (6 more)▾

Close to Tokyo yet quiet, it offers silky alkaline spring water, boar hotpot and rooms where you can stay with your dog. Note that no room has a private bath and the annex rooms are older and retro, so choose a main-building room if you want space and modern comfort.

#NanasawaOnsen#KanagawaRyokan#Atsugi#OnsenNearTokyo#BeautyBath#PetFriendlyRyokan#BoarHotpot

* This introduction was compiled from information published by each property (official website and similar sources), so some details may differ from what you find on the day. It is AI-assisted and can contain errors — please check the official website and the details shown at booking before you reserve.

Check In/Check Out Policy · Check In: 15:00 · Check Out: 10:00 · Last Check In: 20:00

* These policies are the property's own text, in English; the cancellation policy shown at booking takes precedence.

From onsen etiquette to check-in — the things worth knowing first.

What are the check-in and check-out times at Nanasawasou?

Check-in starts at 15:00 and check-out is by 10:00.

Where is Nanasawasou located?

It is in Atsugi. Address: 1826 Nanasawa.

What is the cancellation and refund policy?

Free-cancellation deadlines vary by rate plan and are shown with each room. Cancelling before the deadline gives a full refund.