Tokyo · Tokyo City
Tokyo Somei Onsen SAKURA, Sugamo
東京染井温泉 SAKURA（巣鴨）
An urban natural hot spring 8 minutes on foot from JR Sugamo Station, named after Somei village, birthplace of the Somei-Yoshino cherry. Renovated in August 2025, the interior is now calmer and more Japanese-modern. Amber sodium-chloride strong-salt water pumped from 1,800 m underground holds heat so well it is called the 'bath of warmth', enjoyed in an outdoor rock bath, pot tubs and a garden-view indoor pool, with a hot sauna, cold plunge, outdoor cooling area and a mist sauna on the women's side. Admission including towels and loungewear is ¥2,100 on weekdays and ¥2,900 on weekends and holidays for adults, ¥1,200 for children aged 6 to elementary school – city prices, but with no time limit you can stay all day. Open 10:00–23:00 (last entry 22:30), irregular maintenance closures. Japanese, Western and Chinese dining, a large tatami rest hall, body care, scrubs, esthetics and even hair styling are on site, and a free shuttle bus runs from Sugamo Station; parking for 88 cars (2 hours free on weekdays). Combine it with Sugamo's Jizō-dōri shopping street or Rikugien garden for the closest thing to an onsen getaway on the Yamanote Line.
- Price (adult)
- ¥2,100
- Hours
- 10:00–23:00 (last entry 22:30)
- Closed
- Irregular closures (plus maintenance)
- Access
- About 8 min on foot from Sugamo Station (JR Yamanote Line / Toei Mita Line; free shuttle available); about 10 min on foot from JR Komagome Station; about 10 min by car from the Shin-Itabashi exit of the Shuto Expressway
- Water type
- Simple spring
- Tattoos
- Not allowed
- Admission
- Adults ¥2,100 weekdays / ¥2,900 weekends, holidays & peak days (bathing tax included); children (6 to elementary) ¥1,200. 11-ticket book ¥21,000 (any day). Towels and lounge wear included. Bedrock bath 25 min by reservation ¥1,100 (¥1,320 weekends). ¥330 annual membership gives restaurant and bedrock-bath discounts
- Baths
- Hinoki indoor bath, rotenburo, tiered “stadium sauna” with cold plunge and cool-down space (refurbished Aug 2025), mist sauna on the women’s side, bedrock bath in the outdoor area (Tensho-seki stone from Takachiho). Restaurant (Japanese, Western, Chinese), body care, scrub, esthetics and hair salon. Named after Somei village, birthplace of the Somei-Yoshino cherry
- Water
- Iodine-bearing sodium chloride strong-salt spring (hypertonic, mildly alkaline, high-temperature), pH 7.5, 48.8 °C at source, ~500 L/min from 1,800 m in ~10-million-year-old strata. Clear, strongly salty with a faint mineral-oil scent. Heated and partly recirculated
- Parking
- 88 spaces: weekdays 2 h free (then ¥400/2 h); weekends ¥400/2 h (free 2 h with ¥3,000 spend, all day with ¥5,000). Free shuttle from the south exit of JR Sugamo Station
- Phone
- 03-5907-5566
- Official site
- sakura-2005.com ↗
- Open in Google Maps
- Google Maps ↗
Essentials
Stay in this onsen town
Compare and book stays in Tokyo City. Day bathing itself needs no booking.
Opens partner booking site (affiliate)
Why go
- 8 min from Sugamo Station; renovated Aug 2025
- Amber strong-salt 'bath of warmth' from 1,800 m down
- ¥2,100 weekdays incl. towels; no time limit
A grown-ups’ hideaway in a Sugamo back street — the onsen closest to the Yamanote line
Tokyo Somei Onsen SAKURA opened in 2005 eight minutes’ walk from Sugamo Station on the JR Yamanote loop, in the old Somei village (now Komagome) where the Somei-Yoshino cherry was bred. Among natural hot springs walkable from a Yamanote station it is the most accessible, and its water — an iodine-bearing strong-salt spring gushing 500 L/min from 1,800 m at 48.8 °C — has a volume and strength rare in central Tokyo. Besides hinoki indoor and outdoor baths, an August 2025 refit added a tiered “stadium sauna” and cool-down area that has drawn sauna fans. The interior is calm Japanese-modern, with esthetics, body scrubs, a hair salon and a Japanese-Western-Chinese restaurant, and the clientele skews female. At ¥2,100 weekdays (¥2,900 weekends) including towels and lounge wear it isn’t cheap, but for travellers wanting a half-day onsen a few stops from their hotel it is the most practical choice. A free shuttle runs from Sugamo’s south exit.
Tips & cautions
- Weekends and peak days jump to ¥2,900 — go on a weekday. The 11-ticket book suits long stays.
- No tattoos.
- Bedrock bath is booked in 25-minute slots at reception.
- Combine with the Sugamo Jizo-dori shopping street (Togenuki Jizo) for a half-day stroll.
- Weekend parking is charged — use public transport.
- Strong-salt water stings cuts and can make you light-headed — short dips, repeated, and drink water.
Getting there
8 min on foot from the south exit of JR Sugamo (Yamanote line) or 6 min from exit A1 of Sugamo (Toei Mita line) — Komagome 5-4-24, Toshima-ku. Free shuttle from Sugamo south exit. ~10 min on foot from JR Komagome. By car ~10 min from the Shin-Itabashi exit via Hakusan-dori; 88 parking spaces.
Before you go
- Tattoos are explicitly not allowed, even if covered.
- Last entry is 30–60 minutes before closing.
Features
Sauna & wellness
Mood & scenery
Language support
Amenities
✔ Verified operating: 2026-09 Operating status and rates cross-checked against the official site and onsen guides (full source notes in Japanese on the JA page)
Prices and hours change. Check official sources before visiting.
More in this area
Toshimaen Niwa-no-Yu
An urban spa in front of Toshimaen Station, 20 minutes from Ikebukuro on the Seibu line. Natural hot-spring water drawn from 1,445 m feeds an open-air bath overlooking a Japanese garden, plus a swimsuit 'Bade' pool zone. Adults and teens only (junior high and up), so it stays quiet. Lounges, a restaurant and body care invite long weekday afternoons. No tattoos.
Maenohara Onsen Sayanoyudokoro
Eight minutes from Shimura-sakaue Station in Itabashi, one of Tokyo's most atmospheric super-sento, built around a Showa-era mansion and dry-landscape garden. Free-flowing olive-green spring water in the rotenburo, high-concentration carbonated bath, stone sauna and a soba restaurant. ¥970 weekdays, ¥1,300 weekends and holidays; open until midnight. No tattoos.
Kaiseiyu Onsen Bathhouse (Kamata)
Kamata, 15 minutes by train from Haneda Airport, has Tokyo's densest cluster of 'kuroyu' black-water springs. Kaiseiyu, founded in 1929, is the classic: a coffee-dark natural bicarbonate bath, a high-concentration carbonated pool and a cold plunge, with a goldfish aquarium set into the bath wall. ¥600; a toiletries-and-towel set is sold at the desk. Ideal before a flight or after a late arrival. Tattoos are fine, as in most sento.
