I have never stayed at the resort which is a newcomer to what is one of the larger islands in the island group (Mana) and coinhabits the island with the Mana resort. The Tadrai is situated on one of the beaches on the northern side of the island and I think in time will expand either over the water or to an adjacent beach. The beach itself is very nice at full tide but not good at low tide. With the resort only located on the North side it lacks shelter in certain conditions.
We wandered up the beach past the resort (October, early November) and it still obviously a work in progress. The main pool looked very nice and the dining and bar area also looked very good tucked in behind. From what I hear the food is exceptional.
The rooms are large and appear to be very much 5 star however at the time we walked through not all of the landscaping was complete. The surrounding roads, helicopter landing area etc are still dirt tracks.
All in all it seems to have potential although how they get on with offering 5 star exclusivity on an island that already has a large resort Im not sure. From what I understand you are able to from a legal perspective walk on any beach below the high tide mark in fiji however Tadrai certainly arent keen on this happening.
If you check google maps its a bit disappointing the mess they made of the beach and carol during construction phase.
Im sure it will be great when its finished.