I doubt there's any way you can know you'll be unhappy (or happy, for that matter) at a school. We're trying to get to where you have some kind of info to make that call besides brochures and interview day with the school reviews database, but for now, most people judge their "fit" at schools pretty much arbitrarily, when you get down to it. I would just go to that school. Med school is going to be at least moderately unpleasant, regardless of where you go. Don't risk getting burned by the system to turn down a school you probably don't know very much about.