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Onsen ryokan and hotels in Osaka

Every onsen stay in Osaka we can back with data: onsen analysis reports and facility details checked against the property’s own pages.

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Stays in Osaka

6 stays

2With analysis report
6In-room open-air bath
3Reservable private bath
1Tattoos OK in shared baths

Spring types from the analysis reports

Radium Spring2 stays
pH 6.88–8.4

Spring type and pH come from the main source of the 2 stays whose analysis report we have on file.

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Ryokan with private onsen6 stays Ryokan with an open-air bath in the room6 stays

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Nanten-en
Kawachinagano City, Osaka
- Rooms with private open-air bath
- Tattoos allowed
Radium Spring
pH 6.88
See the spring data ›
PRIncludes affiliate links
View rates on Trip.com
Also onAgoda Expedia Booking.com Jalan
Sources & details
- Analysis report on file
- Private bath checked Oct 2026
- Tattoo rule checked Oct 2026
Spring type: Simple Weakly radioactive Spring / Metasilicic acid 50.3 mg/kg
Source: in-room bath (e-oyu.com) · tattoo rule (e-oyu.com) · Checked May 31, 2026
Hana no Sato Onsen Sansuikan
Osaka
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
PRIncludes affiliate links
View rates on Trip.com
Also onExpedia Rakuten Travel
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (sansuikan.com) · private bath (travel.rakuten.co.jp) · Checked May 30, 2026
Taki no Yu
Kaizuka, Osaka
- Rooms with private open-air bath
- Reservable private bath
Radium Spring · Alkaline (pH 7.5+)
pH 8.4
See the spring data ›
PRIncludes affiliate links
View rates on Rakuten Travel
Sources & details
- Analysis report on file
Spring type: Simple Weakly radioactive Spring / Metasilicic acid 26.9 mg/kg
Source: in-room bath (takiyu.jp) · private bath (takiyu.jp) · Checked May 31, 2026
Nose Onsen
Osaka
- Rooms with private open-air bath
- Reservable private bath
No onsen analysis report on file yet
PRIncludes affiliate links
View rates on Agoda
Also onRakuten Travel Jalan
Sources & details
Source: in-room bath (noseonsen.jp) · private bath (onsensensei.com) · Checked May 30, 2026
Fusio Onsen Fushio-o-kaku
Osaka
- Rooms with private open-air bath
No onsen analysis report on file yet
PRIncludes affiliate links
View rates on Trip.com
Also onAgoda Expedia Booking.com Rakuten Travel
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (travel.rakuten.co.jp)
Ushitaki Onsen Shiki Matsuri
Osaka
- Rooms with private open-air bath
No onsen analysis report on file yet
PRIncludes affiliate links
View rates on Rakuten Travel
Sources & details
- Private bath checked Oct 2026
Source: in-room bath (shikimatsuri.jp) · Checked May 31, 2026

Sorted using onsen analysis reports and what each property states on its own or booking-site page.

How we know

A stay is listed when we have its onsen analysis report on file, or when we checked its private open-air baths, reservable private baths or tattoo rules against its official website or booking-site page. Stays with neither are left out. Lists for each onsen town are under “More onsen towns” below.

This list includes stays whose onsen analysis report we have on file, and stays whose facility details we checked against a source. Stays with neither are left out.
Private bath and tattoo information comes from each property's official website or other published information. Every item links to its source and shows the date we last checked it. Items we could not source are left out.
Spring type, pH and how the water is used come from the onsen analysis report that Japanese law requires each facility to post, and from the facility's water-usage notice. They are shown only for stays whose report we have on file.
Details can change after we check them. Please confirm with the property before you book, especially tattoo rules and private bath fees.
Booking buttons are affiliate links. They do not affect which stays are listed.

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