In the sterile highrise wasteland that is Tysons Corner, the Hilton does not stand out physically. Close to the beltway off-ramp, with a view of absolutely nothing - but the view is not what draws the average visitor to McLean, Virginia. No! You are there for business, and you need a hotel that provides the key elements of a good business stay: Quiet, clean room with comfortable bedding and a good shower; a good 24 hour gym, reasonable bar and room service (I hate eating alone in a restaurant, and I don't like to risk getting my suit stained). The Hilton delivers - I had a corner King, with ample work and sitting space and a nice bathroom with good amenities and decent water pressure. Internet is not free unless you are silver or gold or whatnot, but it is a bit cheaper than other like properties. I got in late and was still able to fit in a short workout in the well-appointed 24 hour fitness center and order up a light meal from room service.
The hotel is reasonably price for the area and for what you get, but still a noticeable chunk more than the Embassy Suites, if you don't care about some of the lesser amenities.
The front desk staff are friendly; it would be nice if the hotel ran an airport shuttle service, but you can't have everything.
Summary: Good value for money, all the amenities and extras you need for stress-free work in preparation for meetings and onward travel.