Call either of the hotels below and ask for rooms in the Mitchell/Tynan room block.
There isn't parking available at the venue, so both hotels are located within a few blocks of the venue. If you plan on staying farther away from the venue, you can pay to park nearby.
THE CAMBRIA
899 O St NW, Washington, DC 20001
202.299.1188
Rate: $269 per night
THE RENAISSANCE WASHINGTON
999 9th St NW, Washington, DC 20001
202.898.9000
Rate: $209 per night