In fact you really are better off posting an ad on the DC Board if you are hosting in NOVA.

Try the rates there and see what you can find...you can PM me too if you want more specifics.

It's like Chicago is a city in Illinois, while Streeterville & River North are neighborhoods IN Chicago, the city.  Crystal City is actually a pretty good place to stay, many hotels, right next to National Airport, with its own Metro (subway) station, many restaurants, a large network of underground walkways connecting many office buildings/shops/hotels, and lots of underground parking, much of which is free after 4:00 PM weekdays & all day on weekends.  Other neighborhoods to consider in Arlington are Rosslyn & Ballston.  Springfield is farther out in Fairfax County, pretty much accessible only by automobile (though there is a Metro station there as well, just not much within walking distance), sort of like Schaumberg or Arlington Heights are to downtown Chicago.

A couple other options may be Pentagon City (Arlington Co.) near the metro/mall or Old Town Alexandria near the King Street metro.  I've lived in Chicago for many years.  If you bring a couple Italian beefs with red and hot, than I be certain to schedule with you.  LOL!