Opened on 28.02.2015 under new name Fab Sauna:
Update 21.12.2014: walk past, closed with nothing posted outside. See here as well: http://web.cruisingforsex.com/bb/thailand/340438-saunas-update-4.html#post689582
There are turnstiles at entrance and exit, with box with numerical touchpad, fingerprint scanner, and chip reader. You hold the chip from the keyring on the reader to get in and out.
Naked zone in the labyrinth. A member of staff (fully dressed) sits at the entrance and makes sure you take of your towel and hang it on the hanger on the wall.
This sauna is advertised for bears and those who like them, and there were some fatties, but with majority of customers in other saunas too fat for my taste it's difficult to say if they are even fatter than average.