+1 Dickey.
Or the new
Luxury spa on Harry Hines between
Blue and
Nagoya (which are also great choices depending on what you're looking for).
NYNY, Rainbow, Bali, and TopStar are among my other favorites of late.
Read the reviews to
target the provider (not the spa) based on your preferences. Avoid the places infrequently reviewed (there's a reason for the silence).