The restaurant is really beautiful - if you like Armani clothes, you'll like the design. Large, round booths facing an open kitchen. Good view of the fountain show. The food was good, but not great (and at those prices, it should be great). Very good service - attentive, but not intrusive. My suggestion? If you want to see the fountain show, go to the lounge/bar in the hotel - the view is better, the bar menu is great, and if all you want is good bar food, you'll do fine. If you go to Ristorante, make a reservation and be sure to request a table by the window, otherwise you won't see the fountain show.
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