For all who considered to stay at the Hilltop Hostel, 300 Carroll St, NE Washington: I just got informed by HostelBookers that the hostel will close.
I thought the Hilltop Hostel to be convenient for Wikimania since it is close to a Metro Station and just 24$ for a bed. The booking fees and deposits will be refunded.
Gereon Kalkuhl, Germany (Gereon K.)