I've eaten there and I'd say the food is perfectly decent if not amazing.
That said, it's way over-priced.
the hotel has package deals where they give you a $75 voucher for the restaurant and the menu is really priced with that in mind. Even with that voucher, IIRC, a dinner (one ap, 2 mains, 1 desert, a couple of glasses of wine) is around $100.
I recall the mains being around $30-$35.
It has a great view, the food is fine and the atmosphere is decent - but only if you have the money to spare.
The name is decieving, it's as far from a grille and grille pricing as one can get. It's much closer to the fine dining end of things to the grille end. $100/couple sounds about right and yes the food is amazing.
Thinking seriously about the 4 S's...Sun, Sand, Surf and ... Booked for Sept in Mexico and booked Samana DR for Jan!