I have some suggestions for you- as I live in West Michigan. Question though-
(1) are you look more inland towards grand rapids surrounding areas or are you looking somewhere along the lakeshore of lake michigan?
(2) Does price matter to you?
(3) What kind of hook-ups or ammenities are you looking for? (water/elect./sewer/wifi etc...)
(4) Are you taveling with children- and want a family friendly place?
(5) Are you looking for 55+ places? Rv only places?
(6) Do you want somewhere with a lake/river or fishing access? Or will somewhere with a pool be ok? Or does it not make any difference?
Answer these, and I can narrow down some choices and give you some suggestions =)