Niwanoyu vs Saya-no-Yudokoro: Which Tokyo Onsen Fits Your Day?
Compare Niwanoyu and Saya-no-Yudokoro on price, shared swimsuit bathing, spring-water treatment, access and entry rules in northwest Tokyo.
These two garden-side hot-spring facilities sit in northwest Tokyo, but they solve different travel-day problems. At Toshimaen Niwanoyu, adults can spend time together in the swimsuit Bade zone before splitting up for the gender-separated baths. Saya-no-Yudokoro is a better fit for a shorter, lower-cost visit centred on its spring bath and garden.
The deciding question for couples and mixed-gender groups
Niwanoyu’s Bade zone has a swimsuit-required pool, outdoor jacuzzi and Finnish sauna. Its main baths and indoor saunas are gender-separated. Couples can spend time together in Bade, then use the separate bathing areas.
Saya’s public baths are also separated by gender. Its bedrock-sauna area is shared, but the facility’s rules do not allow mixed bathing for people of different sexes aged seven and over, including spouses and family members. If you want to spend a substantial part of the visit together, Niwanoyu is the clearer choice.
What the tickets cover
| Cost | Toshimaen Niwanoyu | Saya-no-Yudokoro |
|---|---|---|
| Adult admission | Weekdays ¥2,600; weekends and holidays ¥3,300; designated dates ¥3,400 | Weekdays ¥970; weekends and holidays ¥1,300 |
| Evening admission | Night Spa from 6 p.m.: ¥1,800 on weekdays, ¥2,400 on weekends and holidays, ¥2,500 on designated dates | From 6 p.m. on weekdays, the adult rate is scheduled to become ¥1,000 on Nov. 4, 2026; otherwise the listed adult admission applies |
| What admission includes | Locker, indoor wear, face towel and bath towel | Admission to the bathing facilities; bring towels or rent a set |
| Optional costs | Swimsuit rental: ¥500 | Bath and face towel set: ¥380. Bedrock sauna: ¥760 for guests aged 13+; admission is charged separately. The sauna fee includes its gown and dedicated towel (¥380 each) |
| Children | Guests under 13 are not admitted | Elementary-school-age children and younger: ¥600 weekdays, ¥900 weekends and holidays |
For two adults on a regular weekday, the entry total is ¥5,200 at Niwanoyu and ¥1,940 at Saya. Add-ons are separate: Niwanoyu requires swimwear in Bade, while Saya charges for towel rental and its bedrock sauna. Saya may apply weekend rates on busy dates; Niwanoyu has designated-date pricing during periods such as Golden Week, Obon and New Year.
Niwanoyu is open 10 a.m.–11 p.m. with last admission at 10 p.m. Saya opens 9 a.m.–midnight, with last entry at 11 p.m. A two-hour stop is easier to justify at Saya. Niwanoyu makes more sense when you have several hours for Bade, the baths, a meal or a rest.
The spring water is handled differently
Saya publishes a clear distinction between its pools. The Gensen-buro uses the Itabashi Maeno spring, listed at 32.7°C and classified as a high-salinity sodium-chloride spring. That bath is heated, but not diluted, chemically treated or recirculated. Other outdoor spring baths use dilution and circulation with filtration and chlorine-based disinfection.
Niwanoyu draws its own spring from 1,445 metres underground. The source is listed at 34.8°C and is also a high-salinity sodium-chloride spring. It appears in the gender-separated bathing areas and in an outdoor Bade jacuzzi. The facility does not publish a pool-by-pool treatment table, so it is best described as a private-source hot spring rather than calling every bath free-flowing.
Access, age limits and tattoos
Niwanoyu is about a two-minute walk from Toshimaen Station, roughly 14 minutes from Ikebukuro on the Seibu Ikebukuro Line. It has no parking lot. Saya is about an eight-minute walk from Shimura-sakaue Station on the Toei Mita Line and has 74 parking spaces; weekday parking is free, while the first five hours are free on weekends and holidays.
Niwanoyu admits guests aged 13 and over and does not allow tattoos, including cover stickers. Saya allows only tattoos that can be completely covered with up to two of its own 11 × 20 cm stickers, purchased at the venue for ¥310 each. Tell the front desk before entering; personal stickers do not qualify. Children are possible at Saya, subject to its changing-room and gender-separation rules.
For a wider comparison with other large facilities, see the Tokyo day-onsen guide. If Saya is your pick, its visitor guide covers the baths and entry rules in more detail.
Sources
- [Toshimaen Niwanoyu: admission and opening hours](https://www.seibu-leisure.co.jp/niwanoyu/information/index.html) - [Toshimaen Niwanoyu: visitor rules](https://www.seibu-leisure.co.jp/niwanoyu/information/attention/index.html) - [Toshimaen Niwanoyu: spring water](https://www.seibu-leisure.co.jp/niwanoyu/about/mizu/index.html) - [Toshimaen Niwanoyu: Bade zone](https://www.seibu-leisure.co.jp/niwanoyu/bade/index.html) - [Saya-no-Yudokoro: English visitor information](https://www.sayanoyudokoro.co.jp/english-3/) - [Saya-no-Yudokoro: access and parking](https://www.sayanoyudokoro.co.jp/access/) - Image credits: [Enjoy Tokyo](https://www.enjoytokyo.jp/spot/l_20001245/), [Saya-no-Yudokoro](https://www.sayanoyudokoro.co.jp/access/), [San-tatsu](https://san-tatsu.jp/articles/150602/) Checked: 2026-09-27Tags: Tokyo onsen comparison, Toshimaen Niwanoyu, Saya-no-Yudokoro, Tokyo day trip, hot spring
