Osaka Toyonaka City
A lush premium spa featuring a natural hot spring drawn directly from the source and three types of sauna
"SPA&SAUNA Mizuho Hattori Ryokuchi" is a premium bathing facility in Toyonaka City, Osaka Prefecture. It offers three types of saunas: a high-temperature sauna with auto-löyly, a tranquil meditation sauna, and a Kampo herbal salt sauna. You can cool down efficiently in cold plunge baths of varying depths. Its rare natural radon hot spring, drawn directly from the source in Kansai, is known for its excellent heat retention and soothing effects. The facility also features six kinds of stone sauna rooms, a lounge lined with about 10,000 books, and a restaurant, allowing guests to enjoy a full day of high-quality relaxation in a lush green setting.

A rare natural hot spring in Kansai containing natural radon, classified as a radioactive sodium chloride spring. You can absorb hot spring minerals even through your breath, warming your body from the core. Because the salt coats the skin, it helps prevent you from getting cold after bathing and keeps the heat-retaining effect going. At the upper level of the rock bath, you can indulge in luxurious water drawn directly from the source and enjoy an exquisite bath while feeling the lush greenery around you.

A full-fledged high-temperature sauna that warms you from the core with the heat of far-infrared rays and promotes vigorous sweating. The hourly auto-löyly sends rising steam through the room, instantly raising the perceived temperature and delivering a refreshing wave of heat. Staff-led aufguss sessions are held every day as well, offering a dynamic sauna experience surrounded by heat and aroma.

A calm, serene space where you can deeply turn inward and face yourself in quiet contemplation. Self-löyly is available, allowing you to pour water onto the sauna stones yourself and adjust the humidity and perceived temperature to your liking. In addition, pressing a dedicated switch unleashes a burst of heat, guiding you toward the ultimate relaxation and a deep totonou state in a peaceful environment.

A mist sauna filled with the rich aroma of Kampo herbs that spreads throughout the room and envelops you in fine steam. Its gentle heat makes it easy to stay comfortable even for those who do not enjoy high temperatures, while naturally encouraging deep sweating from within. By placing the provided natural salt on your skin and gently massaging it in, dead skin is removed and the skin is left feeling smooth.

A cold water bath that quickly cools down your body after a thorough sauna session. By tightening open pores, it helps prevent body heat from escaping too quickly and enhances the warming effect after bathing. Its pleasantly refreshing coldness wraps around the entire body, making it an essential part of contrast bathing with the sauna.

An invigorating super cold water bath set to an even lower temperature than a standard cold water bath. The depth is well secured, allowing you to submerge your whole body and draw heat out all at once. It is the ideal setting for those who want to tighten their body to the limit after sauna use and seek an intense cooling sensation.

A luxurious one-person cold water bath placed right next to the meditation sauna in the open-air area. You can enjoy a quiet cooldown at your own pace without worrying about anyone else. After cooling your body in the cold water, the smooth flow makes it easy to transition directly into outdoor air bathing, which is another appealing feature.
Open Year-Round
Guests with tattoos or body art, including sticker tattoos, are strictly refused entry.
Osaka
One of Japan's top saunas — Osaka's most powerful sauna
Osaka
A collection of world baths and Japan's largest 140-person sauna theater
Osaka
One of Osaka's largest bathing facilities, featuring free-flowing natural hot springs and a full lineup of saunas and bedrock bathing
JAPAN'S FINEST ONSEN & SAUNA
The Finest Onsen & Sauna in Japan
57 SELECTIONS
Most of what we surveyed never even made it onto this site. This book is a further cut from what did. Our editor bathed in every onsen and sauna in it, and wrote only what they confirmed on the ground.