Kaizen Private Onsen
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spa

Kaizen Private Onsen

Private Japanese soaking on Sukhumvit 26

Sukhumvit
$$฿1,500-5,000/session
Walk-in Friendly

Editor’s Take

Kaizen solves the one complaint people have about Yunomori — the communal aspect. If you love onsen culture but prefer not to be naked around strangers, Kaizen gives you a private room with the full setup. The Sukhumvit 26 location means you could theoretically do Yunomori in the morning and Kaizen in the evening for the ultimate onsen day. The rooms are well-designed, the massage add-ons are solid, and the pricing is fair for a private experience. Couples love this place.

About

Kaizen Private Onsen offers what Yunomori doesn't — complete privacy. Each room features its own onsen bath, sauna, steam room, and space for spa treatments. The concept marries Japanese onsen culture with Thai massage science in a modern Japanese-designed setting on Sukhumvit 26. Perfect for couples or anyone who wants the onsen experience without the communal aspect.

Treatments & Services

Onsen

Signature: Private Onsen Room + Spa Massage Package

Highlights

  • Private onsen rooms for individuals or couples
  • Combines Japanese onsen with Thai spa massage
  • Modern Japanese-inspired design
  • Same soi as Yunomori for onsen hopping
  • Sauna and steam room included

Best For

Couples and privacy-seekers who want the onsen experience in their own private room

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Contact & Info

Address

29/5 Sukhumvit 26, Khlong Toei, Khlong Tan, Bangkok 10110

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Hours

Daily 10:00-22:00

Languages

English, Thai, Japanese

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