318. Spa Suminoe, Osaka Super sento with natural hot spring water, 35 minutes from Osaka station for 750-850. Water is pumped from 700 meters underground — there was a sign, but it was in the onsen area. Operating hours listed as 10:00-02:00. They stamp the 41 Kansai Super Sento stamp rally 24/25. Has a restaurant, barber shop, massage, arcade games, chill zones, gift shop, massage chairs, and manga. Two bath sets that rotate M/F — Forest and Bamboo. I had the Bamboo set with bamboo in the rotenburo. Bath photos from the internet, partially match — the tint of the clear water in the noted baths was actually slightly brown, while in the photos the water looks just clear everywhere. 1. Outdoor area, no view. The baths are comfortably spaced apart, with some bamboo and trees around the baths and walkways — nice atmosphere. 1.1. Square bath in the center. Clear, slightly brown water. Temperature around 43. 1.2. Large bath by the wall. Clear, slightly brown water. Temperature around 38-39. 1.3. Three small square baths (barrel format), built into the large bath by the wall. 1.4. Carbonated bath with TV, but no bubbles on the body (apparently not working), temperature around 38. 1.5. Two reclining baths with water flow. 1.6. Sauna. 1.7. Steam bath. 2. Indoor area. Breathing is fine, no chlorine smell. 2.1. Double semi-circular bath. One part for reclining, the other regular. Clear, slightly brown water. Temperature around 41. 2.2. Ten different jet baths, including an electric bath. 2.3. Cold bath. Nice place onsen-wise, has M/F bath rotation, convenient city logistics, lots of jet baths. Worth considering for trips near Osaka.
Spa Suminoe
天然露天温泉 スパスミノエてんねんろてんおんせん スパスミノエ
Day Use
YesAdult day-use bathing is 800 yen on weekdays and 900 yen on weekends and holidays; child and infant rates are lower. A 600 yen senior rate applies on Tuesdays and Thursdays only, for guests 65 and older. Multi-visit tickets are also sold.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Cold water plunge bath, typically used after sauna
Policies & Services
Welcomes children and families
Restaurant or dining open to visitors (not just hotel meal plans)
Towels available to rent or borrow
Towels are not included by default; rental is available (also confirmed on the site's usage guide).
On-site or nearby parking available
Highlights
Electric Bath
Jet Bath
Lukewarm BathAbout
Spa Suminoe is a large day-use bathhouse in Osaka's Suminoe ward, right next to the boat-racing stadium and a short walk from Suminoe-koen station. Two open-air baths sit in a garden area, and the indoor hall is packed with variety: a high-concentration carbonated bath, several kinds of jet baths, an electric bath, a lukewarm bath, a lying-down bath, and a tub that changes each month. The water itself runs clear and light in color. A Finnish-style sauna called Isness runs loyly steam sessions, and there's a salt sauna plus a deep, properly cold plunge bath to finish off. The building shows some age, but the baths are kept clean and the outdoor garden turns nice colors in autumn. After bathing there's a restaurant serving Sanuki udon among other dishes, and reflexology and massage are available too.
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Grigorii ...
A good super sento in Osaka. Regular water (although it says onsen), but very nice outdoor baths + the sauna is also excellent (one where a machine periodically adds water to the stones) and all for just 750 yen.
Last updated August 5, 2026