V Clay
Cafe Deluxe, Washington DC
Address 3228 Wisconsin Ave NW, Washington DC 20016 Map, Tel (202) 686-2233 Call, Website
It's not quite white-tablecloth but very good food for grownups with a pretty good kids menu, crayons for the kids, etc. The Cleveland Park has outdoor seating. Have not visited the other 2 locations (Bethesda & Tyson's Corner) but would imagine they are just as kid-friendly.