I had a crashpad but would get a hotel when my wife would come to town.
Crew discount at the Westin is $74. You can usually get it on Priceline for $50 by naming your own price. Just choose only 4 star at the airport. Van every 20 minutes. Very nice hotel, just finished renovations.
LaQuinta off of Sullivan road used to do a crew discount as well for about $50. Nice hotel, stayed 3 months during training. Van was on request, but if they were gone when you needed it you might wait 30 minutes or so.
I think the EconoLodge on Virginia Ave. does cheap crew rooms... I'm not a fan of rooms that open to an exterior walkway, much prefer interior hallways in the vicinity of the airport.