
Kanagawa · Hakone Onsen
Tenzan Tōjikyō – Kayoi Tōji Ikkyū
天山湯治郷 かよい湯治 一休
A quiet bath-only annex within the Tenzan Tōjikyō grounds along the Sukumo River, up the valley from Hakone-Yumoto. Where neighbouring 'Higana Tōji Tenzan' is a full-day complex with lounges and dining, Ikkyū has no indoor bath at all — just open-air tubs of wood and stone fed free-flowing by two springs, a sodium-chloride and an alkaline simple spring. Silver-ion sterilisation (no chlorine smell), spare design and a hushed, no-chatter atmosphere keep regulars loyal. ¥1,200; open 11:00–20:00 (until 21:00 weekends and holidays, last entry one hour before), closed Thursdays. On weekdays a ¥300 'hashigo' ticket lets you add Tenzan next door. About 5 minutes from Hakone-Yumoto Station by the inns' shuttle bus or taxi, or a 25-minute walk.
- Price (adult)
- ¥1,200
- Hours
- Weekdays 11:00–20:00 / weekends & holidays 11:00–21:00 (last entry 1 hr before)
- Closed
- Thursdays (plus ~5 days mid-December)
- Access
- From Hakone-Yumoto Station take the inns' shuttle bus to Oku-Yumoto-iriguchi (2 min walk) or a 5-min taxi; 15 min by car from Hakoneguchi IC
- Water type
- Simple spring
- Tattoos
- Ask ahead
- Admission
- Adults ¥1,200 / children (1–elementary) ¥700. Add ¥300 for a hop-over ticket to Tenzan on the same grounds
- Water
- Own sodium-chloride source, 54 °C, pH 7.98, 70 L/min; silver-ion sterilisation, no chlorine smell
- Baths
- No indoor bath — all open-air. Men’s side overlooks the Sukumo River gorge, women’s faces a waterfall. Ancient-cypress bathhouse with changing area and bath in one room, communal-bath style
- Parking
- Shared with Tenzan Tojikyo, free, ~140 cars
- Phone
- 0460-85-8819
- Official site
- tenzan.jp ↗
- Open in Google Maps
- Google Maps ↗
Essentials
Stay in this onsen town
Compare and book stays in Hakone Onsen. Day bathing itself needs no booking.
Opens partner booking site (affiliate)
Why go
- All open-air, two free-flowing springs
- Hushed bath-only annex, ¥1,200
- ¥300 weekday add-on for Tenzan
A connoisseur’s bathhouse where the water is the star
Ikkyu is the bathing-only building on the Tenzan Tojikyo grounds. Unlike the main Tenzan with its lounges and restaurants, it is stripped down to the bath itself: a house of ancient cypress with changing area and bath in a single room, old-communal-bath style, and no indoor tub — everything is open-air. The men’s side is airy with breezes off the Sukumo River gorge; the women’s side faces a waterfall. It is ¥100 cheaper and quieter than Tenzan, and a ¥300 add-on lets you use both.
Tips & cautions
- Closed Thursdays (Tenzan itself is open daily); also ~5 days in mid-December.
- No indoor bath, so moving between tubs is cold in winter or rain.
- Changing area and bath share one room — keep belongings dry; valuables in the front-desk lockers.
- It is in Oku-Yumoto, ~25 min uphill on foot from the station; the ryokan-association loop bus (route B, paid) or a taxi is easier.
- Tenzan next door has restaurants and rest areas — combine with the ¥300 ticket for a full day.
Getting there
From Hakone-Yumoto Station, ryokan-association loop bus ~10 min to “Tenzan Tojikyo”, or Hakone Tozan bus to “Oku-Yumoto Iriguchi” then 2 min on foot. By car ~3 min from Sukumogawa IC.
Before you go
- No official tattoo policy is published — ask at reception.
- Last entry is 30–60 minutes before closing.
Features
Mood & scenery
Price
Convenience
Amenities
✔ Verified operating: 2026-09 Operating status and rates cross-checked against the official site and onsen guides (full source notes in Japanese on the JA page)
Prices and hours change. Check official sources before visiting.
More in this area

Tenzan Tohji-kyo
Five minutes by shuttle from Hakone-Yumoto Station, a day-use-only bathhouse in the hills along the Sukumo River. Terraced rock rotenburo, a cave bath and a lukewarm pool invite long soaks. No reservation needed; rest rooms, restaurants and a reading lounge make it easy to stay half a day. Tattoos not permitted.

Hakone Kowakien Yunessun
Two halves: the swimsuit spa zone 'Yunessun' and the traditional nude 'Mori no Yu'. Wine baths, coffee baths and water slides make it family-friendly and an easy first onsen for visitors. Tattoos allowed if covered with a sticker. Dynamic pricing in 2026: passport (both zones) from ¥3,500, swimsuit zone from ¥2,500, Mori no Yu only from ¥1,500.

Hakone Yuryo
Three minutes by free shuttle from Hakone-Yumoto. A farmhouse-style day spa whose 19 private open-air rooms are the draw (reserve ahead). The löyly sauna sessions in the main bath are popular too.





