蔵前温泉 さらさのゆくらまえおんせん さらさのゆ
Last entry for bathing is at 1:00 am, one hour before closing.
Adult bathing entry is 900 yen on weekdays and 1,000 yen on weekends and holidays; children (age 3 and up) pay 400/450 yen, and under-3s are free. The Sasa-mushibo (笹蒸房) ganbanyoku room costs extra and can't be used without a bathing ticket: 600 yen weekday / 700 yen weekend-holiday for adults, 200 yen for children. Discount ticket books and a stamp card for guests 65 and older are also available.
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Dry heat sauna room
Cold water plunge bath, typically used after sauna
Shared bathing area for all genders
Baths are single-sex, with the men's/women's bath allocation swapping by day and month; not mixed bathing. (The separate 笹蒸房 chimjilbang ganbanyoku room, entered in provided clothing, is co-ed, but that is not the bathing area.)
Allows entry with visible tattoos
Welcomes children and families
Elementary-school-age children and younger may not enter without an accompanying adult (junior-high age or older); unaccompanied minors under 16 must leave by 19:00, under 18 by 22:00.
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Relaxation space for after bathing
On-site or nearby parking available
A sodium chloride spring served at 'Saiko-no-Yu'. The wellhead runs hot at 52 °C, and the salty, heat-retaining water warms the body and holds its warmth well after the bath. Neutral in pH, it feels gentle on the skin, and the water is tempered to a 40-42 °C bathing range.
Analyzed Sep 14, 2022·株式会社ケイエス分析センター
Electric Bath
Jet Bath
Steam Sauna
Ganbanyoku
Lukewarm BathSarasa no Yu is a large day-use bathhouse, with no rooms to stay in, just baths. Indoors and out there's a wide range of tubs, a carbonated bath, an electric bath, a jet bath, a cool plunge, and a low-temperature nuruyu for a long soak, alongside a stadium-style aroma sauna and a separate steam sauna. The bathing areas are single-sex, and which side gets more room swaps by day and by month rather than mixing. A separate Korean-style heated-floor room called Sasa-mushibo (笹蒸房), entered in provided clothing and shared by men and women together, adds color-themed ganbanyoku alongside the baths. The onsen water is salty and warming, drawn from deep underground, and its color shifts from day to day, sometimes amber, sometimes closer to green. There's a restaurant on site for a meal after bathing and a tatami room to stretch out in.
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319. Sarasa no Yu Kuramae Onsen, Osaka Super sento with natural hot spring water, 40-55 minutes from Osaka station for 850-950. Operating hours listed as 09:00-02:00. They stamp the 41 Kansai Super Sento stamp rally 24/25. Has a restaurant, chill zones, barber shop, massage chairs, reading/work area, kids' zone, and massage. Has a stone bath. There's a photo shoot of the baths with a model on the official website. 1. Outdoor area. 1.1. Two-level bath, clear brown water. Lower level has a TV. Upper level temperature around 37-38, lower level around 40. 1.2. Three stone barrel baths, temperature around 40. 1.3. Silk bath, temperature around 41-42. 1.4. Reclining bath. 1.5. Steam sauna. 1.6. One separate barrel bath in a nook — not working. 2. Indoor area. 2.1. Carbonated bath, temperature around 38. 2.2. Main bath, temperature around 40. 2.3. Bath with rubber ducks. 2.4. Jet zone. 2.5. Electric bath. 2.6. Sauna. 2.7. Cold bath. Solid outdoor area and overall a good place, worth considering for trips near Osaka.
Last updated August 5, 2026