I don't recall the food being anything special at the hotel. But the concierge recommended 6 Bosquet which is an excellent family run, low-priced, gourmet French restaurant just across the Seine on Bosquet. Of course there are plenty of other good restaurants in the area. Just stay away from the tourist places like Planet Hollywood, etc.
The Marriott is just around the corner from my favorite Parisian hotel, the Lancaster. When they are full, I'll stay at the Marriott.