This has reopened as Kouwa no Yu and the new owners are doing a good job with the property.
*Below is my review from when this supersento was owned and operated by Yamato no Yu. *

Old Review
Not too special chain supersento in a residential shopping district.
Yamato no Yu supersento never fail to be the McDonald's of bathing. This one is no exception. That's not to say the water is bad. In-fact the alkaline water felt quite good despite being heavily chlorinated.
The feature bath had a nice waterfall that you could sit against with a few nice places to relax in. I quite enjoyed it to be truthful, but the rest of the baths were so-so. Some of the landscaping was just not there, bare dirt. The entire building was well used.
Not worth going out of your way to and It's a long walk from Taisho station. The walk through a nice residential district of Osaka is enjoyable if you enjoy that. Otherwise, you might want to consider taking the bus if coming from the station.
Decent water and a few good baths but crowded and showing signs of heavy use.

*Photo is from when this was Yamato no Yu*

Update 2018: Much better with the new management. They have a good Instagram account.