Grand Haven State Park has a home in the park on Harbor Ave that used to be the park managers home that they now rent out. Not sure but I think it has 3 bedrooms but you will have to inquire for the latest info. The park manager now has a home in the city so the last few managers didn't need that home in the park anymore thus they rent it out as it's a quite nice place last I looked. Several of the private CG's around here also have cabins they rent too.
Can't help you with the other places you mentioned but someone else can.
