They have special free events on selected days.
Finding the location is tricky; use the door labeled 38 and take the elevator to the 13th floor.
The spa is located near the 34th Street stop, making it easy to access.
I have been using it now for 3 months and it saves me so much research. Reduces the need to call and double check every time.
How did I not know these places existed?! Atly's scoring is a lifesaver, now I can finally find THE spot without wasting time Googling my life away.