Before you book a banquet hall, be sure that there are no noise restrictions in the contract. Although a simple banquet shouldn't get too loud, you can never account for the behavior of all your guests. Furthermore, noise restrictions may limit your entertainment options.
Your chosen banquet hall should be convenient to as many of your guests as possible. For example, a location in the heart of the city might be easiest to reach, will have more parking, and will generally have easier access to alternate transportation, if necessary.