Pros: It's cheap! You can learn a little more about the school! You can find out many of the truths about a certain place, truths you might not get from a dean trying to sell the school to you (like how attractive your classmates are, where to go out on firdays, etc.)! Did I mention it's cheap? Also, you can meet more med students at that place, to see if you fit in. Oh yeah, one more thing, it's cheap!
Cons: You might be stuck on a sofa...no room service...no guarantees...
I would stay with a med student, at least that is what I have been doing...because by now, I am dead broke, having spent mad loot on interviews all over the place.