This supersento located on the 7th floor above a pachinko parlor is a wonderful example of what a good supersento should be. The large rotenburo has a great view of the sky and the planes flying into Itami Airport. Even in the winter sitting in the tub baths looking up into the sky makes you feel like you're in someplace more tropical. The outdoor baths are rather heavily chlorinated, but I enjoy that smell. Great saunas here. Strong and clean.
The interior baths are crystal clear, big, and inviting.
This is definitely a "beautiful skin" bath. Your skin will feel smooth and soft to the touch. The gensen bath is about 35 degrees. Great for chilling out after heating up in the hot baths. Being a gensen bath the carbonation is still in the water and you'll be covered in bubbles if you sit in there long enough. Close enough to Umeda to make it convenient, Naniwa is an ideal supersento experience.