salt's cation — pairs with chloride to make the water salty.
Chloride Cl⁻
table-salt anion — coats the skin and holds heat in.
Known good for
Warmingcold sensitivity
Smooth skindry, rough skin
Cutsminor wounds
A sodium-calcium chloride spring — salty and heat-retaining, the kind of water that holds warmth well after the bath. Weakly alkaline and soft on the skin, it carries a fair amount of metasilicic acid (62 mg/kg) that lends a smoother feel. At the source the water shows a faint yellow tint and is slightly turbid.
Sampled at wellhead·Analyzed Jan 22, 2016·株式会社 総合保健センター·Cert no. M2018010253
A slightly tired but solid super-sento in the suburbs of Osaka
In the indoor area there are three baths with different temperatures:
1. Warm carbonated bath, 39.5°
2. Hot bath, 41.5°, with an electric corner in it that really massages your sides instead of bending you into an arch.
3. Hot bath, fairly deep, listed as 44-45°, but in fact it was 43.5°
There is a dry sauna, large and with lots of steps, so you can choose your own level of heat. The thermometer at chest level showed 82°, under the ceiling, 88°. The sauna comes with a large cool plunge bath, 17.5°
In the washing area there is the standard soap-shampoo-conditioner, but it seems that for summer they put menthol soap into the bottles, because after washing there was an unexpected feeling of freshness.
In the outdoor area there is a three-level outdoor stone bath, 41.5°, a reclining bath, 39.5°, three barrels, a standing bath, 90 cm, loungers, and chairs. There is also a herbal steam sauna, but it was not operating today, it said it was under maintenance.
In the relaxation area there is a restaurant, a kids' area with a small climbing wall (outside in the courtyard), fitness, and a computer corner. There is also ganban-yoku and massage.
Pros:
- large baths with a variety of temperatures
- inside and outside it looks fairly authentic
- 5 hours of parking when visiting the onsen
Cons:
- impossible to get there without a car, the shuttle from the station was canceled in June
- broken lockers in the changing room
- overall everything is old and tired, and with it being +37° outside, the air conditioners can no longer keep up with cooling the relaxation area, so it feels hot.
2026-07-25
301. Yukai-no-yu Neyagawa, Osaka
Super sento with onsen water, 980-1080 yen, on the outskirts of Osaka. Listed hours are 08:00 to 01:00 Mon-Fri and 06:00 to 01:00 Sat-Sun. They give a stamp for the 41 Super Sento of Kansai 24/25. Has a restaurant, chill-out zones, manga, gym, massage, massage chairs, kids' zone, gaming consoles area, and arcade games. Stone bath available. Bath photos from the internet match roughly — the photos themselves are quite rough, but the rotenburo is actually nice.
1. Outdoor zone, no view.
1.1. Three-level bath, clear greenish-brown water, temperature 40.
1.2. Lying bath for 6 people.
1.3. Three lying jets and one standing jet, temperature 38-39, clear water.
1.4. Three barrels with water like the multi-level bath, temperature 39-40.
1.5. Steam bath.
2. Indoor zone. Easy to breathe. Slight chlorine smell but mild.
2.1. Hot bath, clear water, temperature 44.
2.2. Main bath, clear water, temperature 41-42.
2.3. Carbonated bath.
2.4. Sauna.
The rotenburo is well done with interesting water, the super sento is solidly filled with amenities and feels cozy inside. Inconvenient to reach without a car, but otherwise a good place, recommended for a visit.