Pretty much everything. I stayed with a medical student overnight and that was great. People were A LOT more outgoing then I anticipated - they aren't just introverted researchers, which was my impression before the interview.
What impressed you negatively?
One of my interviews was scheduled during the tour of the hospital.
What did you wish you had known ahead of time?
That the neighborhood surrounding the university is NOT THAT BAD. Everybody told me it was in a terrible neighborhood, and while not the greatest, Hyde Park has its own personality.
What are your general comments?
I was really scared of this interview, and the admissions staff (the deans especially) were so friendly from the get go. I had about an hour between my interviews, which intially was a downer, but as I sat in the lounge medical students randomly came up to me and introduced themselves, and we had nice conversations.