Tennen Onsen Naniwa-no-Yu (also called Natural Hot Spring Naniwa) is a popular hot spring spa in Osaka. The naturally carbonated mineral waters of the spring are pumped up from 659 meters underground and said to be good for the skin and for several ailments including joint and muscle pain, and general fatigue.

The entrance to Naniwa-no-Yu is located on the 8th floor of the Yu-Yu Park entertainment complex
The Onsen Facilities
Naniwa-no-Yu has both outdoor and indoor baths, saunas, a massage center, and a unisex hairdresser’s shop. The bathing areas and saunas are separated by gender. There are six outdoor baths set in a rooftop garden which are particularly enjoyable at night under the stars. Inside there are a variety of hot and cold baths to enjoy, including a powerful jet bath and a micro-nano-bubble bath. Ladies have access to an infra-red sauna, and a salt sauna, and gentlemen can enjoy a dry sauna and a steam sauna.

The outdoor rock bath
Japanese Bathing Etiquette
There is a fairly simple but fixed bathing procedure in Japanese traditional public baths and it is a good idea to follow it so that you don’t upset anyone.
- Rinse yourself off carefully before you enter the baths.
- Soak in the bathtubs.
- Wash yourself with soap outside of the bathtubs.
- Have another soak in the bathtubs.
- Rinse yourself off before you leave.
- Wipe off excess water before entering the changing rooms.
- The most important point to remember is that you should never use soap or shampoo inside the bathtubs!

The indoor jet bath
If you are shy about bathing in public, you can use a small hand towel to cover yourself when moving around the bathrooms. However, you should not put the towel into the bath water. Most people either leave their hand towels by the side of the tub or put it on top of their head.
Regulations:
- Customers with tattoos or customers who have been drinking alcohol are not allowed to use the baths.
- Wearing underwear or swimwear in the bathing areas is not allowed.
- Photography is not permitted in the bathing areas or changing rooms.
Restaurants
There are two restaurant facilities on the same floor as the hot spring spa and another on the 1st floor of the building.
Yuushokuya on the 8th floor serves a variety of Japanese meals which include noodles, nabe style hot pots, and set meals with tempura, sushi.
Hanaichiban on the 8th floor is a casual eatery serving light meals and snacks such as French fries, takoyaki octopus dumplings, and chicken wings.
Rien on the 1st floor is a yaki-niku style grilled beef restaurant.

The entrance to Rien
Access
Naniwa-no-Yu is located on the top floor of an entertainment complex called Yu-Yu Park that also houses a pachinko parlor and three restaurants. It is an 8 minute walk from Tenjinbashisuji 6-chome Station on the Sakaisuji and Tanimachi subway lines.
Open:
Monday to Friday: 10.00 – 1.00 (Last entry at 24.00)
Saturday & Sunday: 8.00 – 1.00 (Last entry at 24.00)
Admission Fees:
Adults: 800 yen
Children aged 6 – 12: 400 yen
Children aged 5 or younger: 150 yen
Amenities:
Small towel: 150 yen
Big towel: 500 yen
Hair brush: 100 yen
Toothbrush: 50 yen
Shaving razor: 100 yen
Shampoo & Body Soap : FREE
Article by Michael Lambe. All rights reserved.