here is my post from the Klempsun thread from earlier:
its going to be tough to find a decent room close by, Dragon*con is the same weekend and it has tuned into one of the largest comic/sci-fi conventions in the country in the last few years. Expect to see lots and lots "interesting" people that don't appear to spend much time outdoors
Best bet would be to look around the various Marta stops on the north side of the line, I would look at hotels near Perimeter Mall and the "Medical Center" Marta station. Find one with a shuttle (there are a ton of business hotels around medical center that may have great weekend rates - look for hotels in Sandy Spring, Dunwoody area) that will take you to and from the Marta station. That way you can do without a car. Take Marta to and from the airport and the game. Not too much nightlife in the area though.
Jon