TheFork users who ate in Reims have said really good things about Le Parc Les Crayères, Il Duomo and L'ArTdoise - Brasserie Maison. Maybe you should give them a try!
Some of the more popular Restaurant hotel restaurants where you can go with your family in Reims according to TheFork users include:
Le Riad, with a 9.1 rating
Le Parc Les Crayères, with a 9.8 rating
Dk Africa, with a 9.4 rating