Isn't this why you came to France!!?
Auberge le Relais. We are fortunate to have in the village, a two minute walk from our front door, one of the 500 restaurants attributed a star by the Michelin Guide. This is the Auberge le Relais, owned by Line & Martial Berthuit. Their weekly closing is Tuesday and Wednesday. If you are making a reservation on your own be sure to tell me so there is no confusion. Otherwise I can make it for you. Note that Saturday evenings are usually full, and they do not offer a lower priced menu then so Sunday, Monday, Thursday and Friday evenings may be better. They do not turn the tables so you keep your table for the evening.
Moulin Babet. This fine restaurant at Mezy-Moulins, 4 kms, also has a website and a mention in the Red Guide, though not a star. Owned by Mr & Mrs Arnaud.
Reims. There are other good restaurants in Reims.