Matsunoyu in Nakanobu: Natural Spring Water, a Garden Bath and Two Different Saunas
Matsunoyu uses natural spring water in its baths and taps. The garden and hinoki sides have different outdoor baths and saunas; bath plus sauna is ¥1,000.
Matsunoyu is an old neighbourhood bathhouse with a practical bonus: the operator says natural hot-spring water runs through every bath, shower and washing tap. It is also only a two-minute walk from Nakanobu Station. The Japanese garden and traditional building give it a quieter, older feel than a design-led sento, while the bathing sides have distinctly different equipment.
Check the bathing side before choosing it for the sauna
The men’s side is the garden side. It has a Japanese garden, an outdoor carbonated bath and a Rocky-style sauna with automatic water-pouring cycles roughly every five minutes. The women’s side is the hinoki side, with a hinoki outdoor carbonated bath and a far-infrared sauna. The two sides are not mirror images, so the sauna and outdoor-bath details differ by side.
The garden is part of the bathhouse rather than a large resort landscape. It adds a view and a place to pause, but this remains a local sento. The operator identifies the hot water used throughout the facility as natural spring water. Source-water temperature, pH and flow rate are not included in its current facility information.
Current cost and opening times
Adult admission is ¥600 under Tokyo’s tariff effective August 1, 2026.
Sauna admission is an additional ¥400, making the adult bath-and-sauna total ¥1,000.
Shampoo and body wash are provided.
Matsunoyu opens at 3 p.m. on weekdays, Saturdays and public holidays, and at 10 a.m. on Sundays. It closes at midnight. Monday is the regular closing day; if Monday is a public holiday, the bathhouse opens from 3 p.m. and closes on Tuesday instead.
Nakanobu Station on the Tokyu Oimachi Line is about two minutes away. Togoshi-koen is around seven minutes on foot and Ebara-nakanobu about eight. There are three free parking spaces, but that is a small lot, not a reason to assume a space will be available. Tattoo rules are not clearly published; ask the bathhouse directly if that affects your plans.
Matsunoyu suits travellers who want an urban natural-spring soak and do not mind choosing between two different bathing layouts. For a natural-spring bathhouse without a sauna, Nakano Onsen Tenjinyu takes a more history-focused approach.
Sources
- [Matsunoyu: official site, baths, fees and hours](https://matsunoyu.com/) - [Tokyo Sento Association: Matsunoyu listing](https://www.1010.or.jp/map/item/item-cnt-423) - [Shinagawa Sento Association: Matsunoyu](https://shinagawa1010.jp/list/matsunoyu_b/) - [Tokyo Sento Association: 2024 Matsunoyu feature](https://www.1010.or.jp/mag-tokyosento-comic-103-matsunoyu_nknb/) - [Tokyo Sento Association: adult bathing fee from August 1, 2026](https://www.1010.or.jp/guide/%E5%85%A5%E6%B5%B4%E6%96%99%E9%87%91%E3%81%AE%E3%81%8A%E7%9F%A5%E3%82%89%E3%81%9B/) Checked: 2026-09-27Tags: Matsunoyu, Nakanobu Onsen, Shinagawa sento, Tokyo natural hot spring, Tokyo sauna
