Interesting. I've actually been thinking about visiting sea blue. I would greatly appreciate if a fellow pooner can enlighten me with regards to that establishment.
It's been almost a year since I last visited either places but Sea Blue has newer facilities compared to WaterCube. SB has an nice steam room that can fit 4-5 guys versus WC's steam room which is basically a large shower stall. WC does however have a dry sauna and a hot-tub that was under maintenance when I last went.
SB's locker room attendant gave us some orange slice/chips to snap on and they have a large TV. This is good if you're waiting for a friend or taking a break in between sessions.
Cost wise, I think it was $60 room fee and $60/80 tip for both locations.. then add in another $5 for the locker room guy and you'll realize it is steep for what you're getting.
While SB is newer, the ladies at WC are easier on the eyes.
I'd only recommend these places if you are going with a buddy or two and have some time to kill. Otherwise you'll get much better value at a place like Smart.
If I had to choose, I'd go to WC. Thus my search for another establishment that is similar to WB and SB
