If you belong to a faternal orgination there may be a lodge with RV facilities, Alas the Taylor Moose is closed for the time so no joy there.
I stayed at the old Greenfield KOA, not called Greenfield-Detroit Campground, Not bad, fair Wi-Fi. full hookup though I took a 30 amp site, You might want to call ahead.
Algonac State Park is electric only with dump station and water fill station (It is N.E. of Detroit on Jeffereson.
Beyond that I can't help much. I used to have a low-power site in the city itself but, alas, last I knew I handed the title to the bank and said By By.