I stay at this Renaissance Hotel quite regularly, and the restaurant has gotten a lot better over the years! The service is outstanding and attentive, and there is a good variety of food on the menu. My favorite thing to get is the house salad with candied pecans and salmon. And if you ask for it, they will bring you warm fresh baked bread.
Never tried the breakfast buffet because I have access to the club lounge with Marriott gold status.
This restaurant is also good for if you are not staying at the Renaissance but in the neighborhood, especially if you don't want chain or lower end food.