Things to do at Bronyaur?
Swimming, walk on the beach, climb a sand dune, visit water parks at Crystal Mountain, golf, fishing, winery, casino, fine or casual dining, camp fires, camp on the beach, volleyball, horseshoes, ping pong, local festivals, pick berries, ... I could go on and on
Drive up scenic M-22 to places like Frankfort, Manistee, Onekama, Traverse City, Petoskey, Arcadia
Nights are really dark at the cottage. If you like star-gazing then you'll never get a better chance.