KW guy is correct. FS at a spa especially with some newer girls is hit and miss. If fs is what you're looking for, you should see an escort. Try to find a good review on an escort. Heidi Vixen is a pretty good one that comes to mind. If you want someone a little thicker than Heidi, then try Canadian Asian Mellissa.
If this is your first time, let her know. Mellissa would be great for this. If you're interested, I can private message her number to you.