The water here is normal Osaka city water, but good quality. Curvy describes the design here. The main bath is nice and curvy and the deep area is very nice, but the jets are weak and pushed into a cramped corner. The sauna is nice, but a little weak. The outdoor baths are both small and a little shallow.
Done in a exposed concrete style with emphasis on curves, the design of Enmei-yu makes it worth a trip here. The layout is basic bandai style with separate entrances for men and women. In the wide bright changing room the lockers curve in and out as they direct you to the entrance for the baths. The toilet is located in the front end of the changing room off of an little concrete alcove. Everything seems like it was the day it was opened. Of course there are signs of this place’s age, but it's not dirty like some places get.
The person in the bandai (the front reception area) is always cheerful and the customers seem very happy. I had a nice chat with a fellow gaijin here the first time I came. Everyone seems to be enjoying their own time. And the price, at only ¥350 well below the normal ¥410, you can't make a better choice for a quick bath near Umeda.

The name, Enmei 延命, means longevity.
They also sell some sold style sodas.