Find the Best Private Onsen Hotels & Ryokan in Osaka

Osaka has two verified spots with private bathing — a day-use facility on the bay with 10 kashikiri outdoor baths, and a traditional ryokan in the hills 30 minutes north with private open-air baths in every room. Both require advance reservations, and the experiences are very different.

Where can you find a private bath in Osaka?

Solaniwa Onsen Osaka Bay Tower is the easier option for day visitors. This large facility in Minato Ward has 10 reservable private outdoor baths (kashikiri), each with its own mini-garden. You do not need to cover tattoos in the private baths. Solaniwa is a short walk from Bentencho Station on the JR Osaka Loop Line — about 15 minutes from Osaka Station.

For an overnight stay, Fushio Kaku Onsen in Ikeda offers 20 guest rooms with private open-air baths plus a separate kashikiri rental bath. This historic ryokan sits in a forested valley about 30 minutes from central Osaka by train. A shuttle runs from Ikeda Station (reservation required). Day visits with lunch are available from ¥7,700 per person, though the private baths are tied to room bookings.

What should you expect?

At Solaniwa, private baths run 90 minutes per session. Standard rooms start at ¥8,800 (plus facility entry of ¥2,310–¥3,630 per adult). Larger rooms with tatami lounges or tent saunas run up to ¥15,400. Extensions cost ¥2,750–¥5,500 per 30 minutes. Baths accommodate up to six people. Book through the Solaniwa website — weekends fill up quickly.

At Fushio Kaku, the in-room baths are open-air rotenburo overlooking the ryokan’s gardens. Pricing for the separate kashikiri bath is not published — check directly when booking. Overnight stays start from ¥23,100 per person including meals. Book through the Fushio Kaku website or via the Fushio Kaku Onsen listing.

In both cases, the private bath is a fully enclosed space — you bathe in privacy with no covering requirements.