"I lived down the street from this little known secret for two years and whenever I wasn't sure what to have for dinner I would go to the L Street Diner. Their menu was large enough that I could find something I would like.  In a city not known for its pizza, this place may has some of the best. The calzones are a favorite and they offer more than the regular ham, cheese and veggies with a lot of selections. Very friendly staff! "