Interview: 2 interviews, 1 on 1, one was 20 min (dude was over 2 hours late), the other was 2 hours long. Open file; they will know your file better than you. Seriously. You have a lot of research, be prepared for questions about it. The lady (Nanos?) will tell you while you're waiting for lunch that they don't have an agenda to ask about ethics. This is a lie. My second interviewer showed me the form he had to fill out. They have to ask about ethics. It's one of 8 criteria on their matrix (8 criteria, 5 points per issue). Learn about ethics here:
http://depts.washington.edu/bioethx/topics/index.html
Lodging: stay with a current student.
Your other questions, I honestly couldn't figure it out. They have an array of 8 criteria for interviewers, most of which are subjective (the only objective one is academic preparation - grades and MCAT scores) including motivation for medicine, understanding of ethics, just what kind of non-science things you're about, maturity, and I really wish I remembered the rest for you but I'm sorry I don't. It was a while ago. I'm really sorry, man!
The facilities are a little underwhelming (it's not CU) but the people were all
really enthusiastic (which was really odd juxtaposed with the facilities and neighborhood). So that was definitely a positive.
It's not stressful at all. My interviewers were both really nice and enthusiastic, and so were most of the students. Be comfortable, they told me a few weeks ago that they haven't filled their class yet, so there's a good chance you're actually interviewing for a spot in their class and not a waitlist spot.
Good luck! I'm sure you'll do fine.