I ended up checking out Real Extreme Touch (http://www.realextremetouch.com). I liked being able to see the masseurs online, and they will make reservations/confirm that the person you want to see if working on a given date/time. Don't expect much in the way of ambiance, or a working shower, as was the case during my visit. Also, it's located in San Juan, so as long as it's not rush hour, only about 25 minutes from Makati (which is around the corner in Manila terms).
@LoveNDino proposed another spot, White Palace Spa, which I'll also try to visit during my stay.