Minami-Kashiwa Sumire: Choose the Spring Bath or the Stone Spa
Sumire’s ¥950 weekday ticket includes two saunas; La Viola stone spa costs extra. Only the outdoor Atsuyu is marked 100% free-flowing spring water.
Start with the ticket that matches your visit
| Adult visit | Weekday | Weekend/public holiday |
|---|---|---|
| Baths and public-bath saunas | ¥950 | ¥1,100 |
| La Viola add-on | +¥650 | +¥750 |
| Total with La Viola | ¥1,600 | ¥1,850 |
Totals exclude food and other paid services.
Children aged four to under middle-school age pay ¥450 on weekdays and ¥550 on weekends and holidays. Children three and under enter free. Shampoo and body wash are provided; other items can be brought along or bought or rented at the facility. The same ticket allows repeated bathing until you leave, so there is no need to rush between tubs.
| Adult visit | Weekday | Weekend/public holiday |
|---|---|---|
| Baths and public-bath saunas | ¥950 | ¥1,100 |
| La Viola add-on | +¥650 | +¥750 |
| Baths, saunas and La Viola | ¥1,600 | ¥1,850 |
The add-on makes sense if you expect to use the stone-spa rooms or lounge. La Viola has five rooms, including music-based loyly sessions, and an area for its users with manga and massage chairs. If you mainly want the spring bath, cooling pool and regular sauna circuit, the basic ticket covers that without adding another fee.
The spring water has more than one treatment
Sumire’s own source is called Minami-Kashiwa Onsen. The facility classifies it as an iodine-bearing sodium-chloride spring. Its outdoor Atsuyu is explicitly marked 100% kakenagashi: source water flows into the bath and is not mixed with fresh water there.
That description does not apply to every tub. The outdoor Kutsurogi-yu takes overflow from the hotter source bath and adds fresh hot water to make the temperature easier for a longer soak. The indoor Nukumori-no-yu also uses spring water, while the carbonated bath, silk bath and jet bath have different functions. If free-flowing source water is your priority, look for the sign for Atsuyu rather than assuming the entire bathing area is supplied the same way.
The public bathing area has two saunas: a hot-air automatic-loyly sauna and a mugwort, mud and salt steam sauna. One current caveat: the facility posted a September 19 notice about suspending the women’s mugwort sauna. The general facility page still describes it, so check the latest notice or ask at reception before counting on that room.
A morning start is possible, but check the monthly closure
Sumire opens at 7 a.m. and closes at midnight; last admission is 11 p.m. La Viola has a shorter day, from 7 a.m. to 11 p.m., with last entry at 10 p.m. The regular closure is the third Thursday of March, June, September and December. Extra notices can affect individual dates.
From Minami-Kashiwa Station on the JR Joban Line, allow about ten minutes on foot. The facility also has a 184-space multilevel car park, with a height limit of roughly 2.1 metres. For a large vehicle or a low-clearance issue, check with the facility before driving over.
Entry rules can decide the trip before price does
Sumire’s current rules refuse entry to guests with tattoos, including tattoo stickers. The published policy does not describe a cover-seal exception. If that applies to you, choose another facility rather than relying on a private room or a small tattoo being allowed.
Children may not bathe with someone of another gender if they are of elementary-school age or older, or at least 120 cm tall. The facility also asks that children of elementary-school age and younger not visit unaccompanied. If a child is close to either mixed-bathing threshold, ask how staff apply the rule to your family.
There is also a simple route choice: Sumire is near the Joban Line corridor, but it is a walk from the station rather than a connected terminal complex. For visitors already in the Kashiwa or Matsudo area, that is easy to plan around. If your trip is specifically about a larger sauna setup, compare it with Spa Metsä Otaka’s Dragon Sauna; the two facilities serve different priorities.
