Mizunooto Onsen - A Tattoo-Friendly Hot Spring in Hakone Onsen, Kanagawa

The first thing you hear is water. A suikinkutsu at the entrance plays a high, bell-like note as drops fall into a buried jar — and that sound follows you through the whole property. Streams thread through the garden, a koi pond fills the lobby, and everywhere you turn, the name earns itself. Mizunooto means "the sound of water."

The ryokan sits in the forested hills of Kowakudani, one of Hakone's seventeen hot spring areas, and draws from two different sources — Kowakudani and Miyanoshita — feeding baths across two wings. The newer Suihan no Sho wing has stone and hinoki tubs overlooking garden views; the main Suigetsu no Sho wing leans toward rough-hewn rock baths framed by bamboo. A 2025 renovation left everything sharp and clean.

For tattooed travelers, three private outdoor baths sit along a garden path, and select rooms come with their own open-air tubs — all fed by the same source water. Communal baths follow traditional tattoo restrictions, so a private bath is the way in. If you want a Hakone ryokan where the private bathing feels like a feature, not a workaround, this is it.

• Two Hot Spring Sources, One Property: Kowakudani and Miyanoshita springs feed different wings — soak in both without leaving the grounds, each with its own character and temperature.
• Private Baths for Tattooed Guests: Three kashikiri outdoor baths in the garden plus select rooms with private open-air tubs — tattooed guests can bathe in privacy without entering communal areas.
• Post-Renovation Freshness: A 2025 renovation overhauled baths, rooms, and dining spaces — the property feels current, not dated.
• Staff Comfortable in English: International visitors consistently describe staff as friendly and professional in English — from the station shuttle pickup through dinner service.

Hot water and forest air hit you the moment you step onto the outdoor deck. The Suihan no Sho wing's rotenburo faces a canopy of green — hinoki and stone tubs set into a hillside garden that shifts from deep summer green to red-gold in autumn. Across the property, Suigetsu no Sho's baths sit lower, framed by bamboo, with rougher stone edges and a sauna with cold plunge between rounds.

The Kowakudani source runs clear and warm with a faint salt softness on the skin. Miyanoshita's spring carries a slightly different feel — guests who soak in both wings notice the contrast. Gender rotation switches nightly, so a two-night stay covers all four communal bath areas. The three private garden baths are smaller, open-air, and tucked into the trees — quieter than the main baths and worth timing your visit for.

✈️ Haneda Airport → 🚅 Take Keikyu Line to Shinagawa → Transfer to JR Tokaido Line to Odawara → 🚌 Hakone Tozan Bus to Kowakudani Station → 🚐 Free shuttle (or 🚖 5-min taxi)

🚅 Shinjuku Station → 🚆 Odakyu Limited Express "Romancecar" to Hakone-Yumoto (90 min) → 🚂 Hakone Tozan Railway to Kowakudani Station (30 min) → 🚐 Free shuttle (3 min)

🚌 From Odawara Station → 🚌 Hakone Tozan Bus "H" line to Nino-taira iriguchi → 🚶 5-min walk

Advance reservations are strongly recommended for tattooed travelers to secure rooms with private onsens or to pre-book private bath sessions, especially during weekends and holiday periods when the ryokan experiences high occupancy.

🌐 Website: Official Website

📞 Phone: +81 460-85-8371

📍 Address: 492-23 Kowakidani, Hakone, Ashigarashimo District, Kanagawa, Japan