My office is located at 1350 Connecticut Ave, NW, Washington, DC (the building with Cosi, Panera, and Krispy Creme, right on the circle). By metro, take the Red Line to Dupont Circle and exit the South entrance. The building will be right there as you exit. To find the office, take the elevator to the 4th floor. Make a right out of it, and then a left down the hall. The suite, 405, will be on your left.
There is on street, metered parking available. The meters on the front sides of the building are only until 4pm (and they are very strict about ticketing).