L.J.
I love Spa in the Valley. They're a bit pricey, but before and after your massage you get to take advantage of the Tuscan Room. In the past I've gotten an hour massage, and then stayed in the Tuscan Room for over an hour. It has a Eucalyptus Steam room, a sauna, a jacuzzi pool, and an awesome shower that sprays from 4 or 5 different areas. I highly recommend them. You will not be disappointed.
Good luck!
L.