The Spa at U Chiang Mai
The spa at U Chiang Mai is endorsed by travel writers. Out of 4 professionals that we tracked, 2 mentioned the spa, like Rough Guide and Fodor's.
U Chiang Mai 
Rough Guide
Fodor's
Rough Guide "The reading room and spa occupy the hundred-yearold
former governor’s residence, while some of the rooms
– decorated in contemporary Thai style, with daybeds on
the balconies, rain showers and iPods – give straight onto
the small, black swimming pool"
Fodor's "The house now serves as the lobby, spa, and reading room"
