Transportation:
While we expect most (all?) of you to drive in, Detroit Airport (DTW) is around a half hour drive from Ann Arbor. To get from the airport, most people use Uber/Lyft but there are also taxis available outside, as well a bus service to downtown Ann Arbor if your flight times line up with the bus schedule.
Parking
Should you wish to park close to campus, your best bet may be the public lot at 650 S Forest Ave, Ann Arbor, MI 48104, which is just a couple blocks walk from the department. The rate is $1.50/hr.
Accomodation:
There are many Airbnb options available close to campus.
Hotels on Campus:
Inn at the League
911 North University
Ann Arbor, MI 48109
Phone (734) 764-3177
Exhibit A2
212 S 4th Ave
Ann Arbor, MI 48104
Phone (734) 409-7273
The Bell Tower
300 Thayer Street
Ann Arbor, MI 48104
Phone (734) 769-3010
The Executive Residence at Ross
Ross School of Business
University of Michigan
724 E University, Suite 3700
Ann Arbor, MI 48109
Phone (734) 764-7677
The Graduate
615 East Huron
Ann Arbor, MI 48104
Phone (734) 769-2200
A more extensive list of area hotels may be found here