Hey. Can you (or do you know someone who could) tell me if this would be a good hotel?
http://www.starwoodhotels.com/sheraton/property/area/map.html?propertyID=829
to check out whether a hotel is in a good area, I use "www.tripadvisor.com" and I look for the "forum" for the city. Local experts are willing to answer questions and folks also post reviews/experiences of their stay at different hotels. The "washington d.c." forum helped me a lot when I checked it.
Several issues to keep in mind: you'll probably want to be close to a metro station if possible, or get a hotel that will shuttle you to a station, as driving/parking will not be easy that day. Second, check on the cost of parking at your hotel; some tack on an extra $10 to $20 per day!!