I think Raw is open 24 hours, isn't it? One thing I do like about it is that it isn't purely the domain of Singaporean Chinese. It's the only Singapore sauna where I've found a decent selection of Malay and Indian-Singaporeans.
I finally made it to The Box -- now renamed Shogun -- last time I was in Singapore. From tales I'd heard, I was expecting a no-holds barred sex club. What I found, though, was a dead sauna without the sauna facilities. Pretty pathetic.
For saunas, I still like One-Seven the best.
Anyway, for a good directory of stuff, try
www.sgboy.com in addition to
www.fridae.com.