From Detroit Metro Airport:

Take I-94 west for approximately 20 miles
Take the State Street Exit (#177).
Turn right at the light at the end of the exit ramp.
Go approximately 0.3 miles; you will see Wolverine Tower, a dark brick building, on the right.
Turn right into the parking lot (look for a Damon's Grill sign).
Go to the back of the building and park in the area specified as "Visitor Parking".
Go into the ground level of the building and take an elevator to the 10th floor.