If you are ever going to treat yourself to a spa day, go to Burke Williams. You are in a robe and slippers...you have an hour to relax whether its at the jacuzzi, sauna, and/or shower...and then you get your massage (or facial, whatever you paid for) and then you can leave whenever you want. My boyfriend took me there once and I had a great experience.
What can you say but NICE! The service is impecable and you'll feel like a king for a few hours! Luxurious, clean and a completely professional atmosphere. So release your inner homo and get a few treatments!