I ate here for breakfast--- and lunch and dinner at the Potbelly on M street between 21 and 22nd street NW last week. I was in town several days, and it was nice to have healthy options.. (but the second Potbelly I can't find on trip advisor). Great menu, fast service, good prices, quality food. Cute ambiance and it's not too loud at lunch, dinner, or bfast. I esp liked the Potbelly on M between 21 and 22---- really friendly people, and sometimes that makes all the difference.