Since the only clue as to its whereabouts is the fact that it's listed in the "Southwest Michigan" Craigslist, interested parties would need to send the seller an email requesting more information...
Off 43 & near 54th street, between Bangor/Breedsville ...
West of Kalamazoo, if they labelled their map correctly. It's farm country of course. Exact location....with a reply from seller should get you near these cross roads.