Your best bet if you want to stay in the Historic District, walking distance from everything would be anything on Bay Street.

Check out Expedia.com I don't know your price range, but they seem to run anywhere from 89 - 169 a night.

Now if you want to save a little money, I would recommend staying out by the Savannah International Airport, Pooler, Georgia. Candlewood Suites on Airways Avenue (Exit 104) is pretty new.. $60 a night. There are several others there as well, many just built.

I live in Pooler and it my thinking with everyone driving in we'll more than likely meet up with some right there at that Airport Exit 104 off I-95..