We ate in the evening on the terrace directly by the water park (the interior is currently being renovated). Since the restaurant is part of the water park grounds, the glasses are plastic, but stylish. The food was okay, and the staff was quick and very friendly. We didn't particularly enjoy the desserts, tiramisu (frozen) and lemon sorbet (warm in a cup). The espresso, however, was hot and excellent.
We had lunch during the week of Ferragosto:
Very fast service, excellent dishes, and very generous portions. Friendly staff and a pleasant atmosphere overlooking the pools. Recommended!