I checked in to Thalasso about an hour ago, after spending 2 nights at Le Moana.
A few thoughts. Thalasso is much more modern than Le Moana. I read that before I visited the two properties, but the difference is more striking than I had imagined. Someone also said Thalasso is lacking character, it is just a luxury resort room that happens to be over water. I would say that is accurate. When you're inside the room, you wouldn't know your man in Island resort is not for the views. Le Moana, on the other hand, is literally built of bamboo and wood and leaves. Furthermore, Thalasso is huge and much less intimate feeling than Moana and of course, the lack of fish. Both properties have strong and weak points. I'm not sure which I like more, but my wife definitely likes Thalasso more.