Here are directions for reaching Van Ness from downtown:
Take Connecticut Avenue north. At Upton street you will see a large glass and steel building looking something like an alien spacecraft, on your left, set in a large park. This is Intelsat headquarters. Two blocks later, at the T-intersection of Connecticut and Veazey, turn right and proceed for one block. Free short-term visitor parking is available in the circle in front of Van Ness North.