My wife and I just left Trisara about a week ago, and we had an absolutely phenomenal experience. I've been slammed with work, but plan a Trip Report at some point (granted, it's a bit of a RTW trip, so it might take awhile).
Stunning physical property -- in truth, we hardly ever left our villa. Very, very good F&B, fantastic service, my wife thoroughly enjoyed the Spa, and lots of attention to detail (both hard & soft product) really made it a wonderful stay.