Travel Note
Airbnbs will probably be more affordable than hotels in Ann Arbor. Let me know if you would like to stay in any of the already-booked airbnbs.
Travel Note
Detroit airport (DTW) is 30 minutes from Ann Arbor There is a bus (Michigan Flyer) from DTW to downtown Ann Arbor: https://www.michiganflyer.com/ Let us know your flight info and we will also organize carpools.
Travel Note
You probably don't need one. We should have cars to borrow if you want to go somewhere.