Ren BKK
In a private conversation with a Marriott executive officer I got chatting to earlier in the month, he was so bowled over by this property that it's moved to the top of his list for BKK stays.
I had the impression that he was totally on the level, without any incentive to throw me a swerve.
( Personally I have thoroughly enjoyed my stays at the BKK Spa, the only negative being its a bit out of town. )