This is a really nice place to stay in this area. It's not stuck in the middle of a bunch of stuff, but still close enough to drive (nothing really within walking distance except for WalMart, Best Buy, etc.).
Like the one other Candlewood I've stayed at (Salt Lake City, UT) the rooms are spacious, very clean and modern. Great gym, a pantry with snacks and toiletries, movies to check out. There's a Wegman's grocery store within 5-minutes. Restaurants, theater, book stores, Dulles Town Center mall also within 5-minutes.