Marushin Spa

A 1-minute walk from Sasazuka Station on the Keio Line. This men-only sauna facility occupies the 10th floor (reception) and 11th floor (bathing area) of the Marushin Building on Koshu-kaido avenue, and has served as a filming location for the "Sa-Do" drama series. It features a sauna room using genuine Finnish iki sauna heaters, plus a reservation-only private sauna for 1-6 guests. The cold bath uses groundwater. The relaxation area has high-grade leather recliners, free WiFi, and power outlets at every seat, and food and drink are allowed there. The restaurant serves house-made "Sasazuka char siu" among other dishes. Admission is time-based: on weekdays, ¥1,800 for 2 hours, ¥2,200 for 4 hours, ¥2,600 for 6 hours, or a ¥3,900 night plan (entry from 22:00); on weekends/holidays, ¥2,400 for 2 hours, ¥2,800 for 4 hours, ¥3,200 for 6 hours, or a ¥4,100 night plan. Open daily 10:00 to 8:00 the next morning, with no fixed weekly closing day. Guests with tattoos and intoxicated guests are refused entry. As this location is men-only, women are directed to the women-only facility "Shajio-buro Pasiru Petit" on the 9th floor of the same building, or to Marushin Spa's own Ladies Day.

Adult (weekday)

¥1,800

Adult (weekend)

¥2,400

Child

Unconfirmed

Time limit

Unconfirmed

Sauna surcharge

Unconfirmed

Ganban'yoku surcharge

Unconfirmed

Late-night surcharge

Unconfirmed

Towel

Unconfirmed

Roomwear

Unconfirmed

Time-based admission. Weekdays: ¥1,800 for 2 hours (entry by 18:00), ¥2,200 for 4 hours, ¥2,600 for 6 hours, or a ¥3,900 night plan (entry from 22:00). Weekends/holidays: ¥2,400 for 2 hours, ¥2,800 for 4 hours, ¥3,200 for 6 hours, or a ¥4,100 night plan. A reservation-only private sauna for 1-6 guests is available for an additional fee.

Source: Review site · verified 2026-09-24

Opening hours

10:00 – 08:00 (next day)

Last entry

Unconfirmed

Closed

Unconfirmed

There is no fixed weekly closing day; the facility closes irregularly. Closures are announced on the official website's news page or social media.

Source: Official website · verified 2026-09-24

Dry sauna

Unconfirmed

Dry sauna · Auto-löyly

Unconfirmed

Dry sauna · Aufguss event

✓

Cold plunge temperature

Unconfirmed

Open-air rest space

Unconfirmed

Source: Official website · verified 2026-09-24

Spring type

Unconfirmed

Natural hot spring

—

Open-air bath

Unconfirmed

Carbonated bath

Unconfirmed

Baths

Cold plunge

Facilities

Restaurant / Rest area / Wi-Fi

Payment

Unconfirmed

Amenities

Unconfirmed

English signage

Unconfirmed

Sasazuka Station (Keio Line)

京王線 / 1 min walk

Airport access

Unconfirmed