Another question about away rotations. How do you set up your living situation? Do the schools help you or are you on your own?
Some schools may possibly even provide housing. Not sure how common, but it's possible.
Many programs will provide a list of places you can rent--often subletting a room in a house. On one rotation I rented a room in a family's house (kids had moved out--hence the extra room), on my second rotation I rented a room from a professor.
The first one I cold called places on the list the school provided. For the second rotation I wasn't given a list, so I used craigslist. However, I found out that one of the other students rotating with me asked the coordinator if she had a list of housing opportunities.
While I really enjoyed the place I rented, the moral is--ask the school if they have a list or recommendations regarding housing, it could really save you a headache (and possibly some money).
Also, get your housing lined up as early as possible. The lists are often made available to all the other visiting students, including visiting scholars to the university. As soon as you know you're approved (even if it's conditional on sending in the application, as it was in one case for me) then line up a place to stay ASAP, esp if you have any limitations (need parking, want to be in a specific area, etc.)