If you still stay where I think you stay in the D, there are a few airlines that stay there and agree it is a pretty decent location for an overnight. A couple friends and I frequent a bar that is really close and in between checking out the wait staff, drinking beer, and watching sports we play pick out the flight crews.

You don't want to be in downtown Detroit anyway, it is pretty dead when there isn't a concert or a sporting event. Plus the only decent place down there to stay is Greek Town.