I have been to the one in Allen Park and it is super easy to get to. You get off the I94 and the Target is about 2 minutes away (I can't remember the exit number). Plus, getting back on the freeway is easy. It is on the way to the airport so you don't have to go out of your way to get there. Also, there are other stores around it but I can't remember which - we only stop for the Target and the Panera Bread for lunch!
A GPS would help, as rjan said. I use GoogleMaps to get there.