Mandalay Bay Spa Services/Massages Recommendations?

I'm coming to Mandalay Bay Spa Wednesday (6/17) and Thursday 6/18. Have been to the spa before and absolutely love walking around naked the entire time and enjoying the sauna/steam/tub, etc.

But I've never had any services-massage, facial, etc at this location.

Was wondering if anyone had experiences with their massage services. Quality? Worth getting? Specific recommendation or therapist?

Or best to just hang naked in the steam, sauna, hot tub, etc?