Be careful about Mike's crashpad. He is very shady, keeping security deposits, the crashpad car frequently brakes down and you have to pay for a cab. Up to 10 people in some rooms. If you ever have a problem he lives in Idaho so good luck getting a hold of him. I would highly recommend looking at some of these websites, there are many options in IAD.
http://crashpads.com/view_paidcrashp...rch_Result.cfm
CrewCommute.com - Pilot pads, Flight Attendant pads, Flight Crew pads