My extended family, consisting of 16 people (adults and kids) stayed for a week. Having previously rented 2 to 3 smaller houses/cabins for summer get-togethers, we decided we actually prefer the single house arrangement after staying at this house. Meals and planning for the day were both much easier, and amazingly, we all felt that we had plenty of space with the basement, vast front yard and beach area. The rooms were set up perfectly for privacy, they were very comfortable and cool at night, there were plenty of bathrooms/showers/sinks for all, and the kitchen supplies were plentiful. It was also nice to have the washer/dryer.
Our highlights were:
camp fires and ghost stories every night (a guy up the road sold us a big trailer of cut oak for $10). We appreciated having sufficient chairs in the garage for all of us.
Camping in the front yard for a night.
Kids playing baseball, football and lacrosse in the big front yard - endlessly!
A trip to Frankenmuth to the Adventure Park, a high ropes/zip line adventure course, then big chicken dinner at Bavarian Inn, and driving through the wind farms/windmills through the country side on the way back
Ice cream at the Chill Zone in Port Hope - twice (huge servings for cheap!)
A family "polar bear plunge" at Harbor Beach (the week was a bit chilly!)
Kayaking along the property's beach and biking on M25 (we brought our own kayak and bike)
Afternoon jogs/walks on the paved trail at Harbor Beach, also the Maritime Festival there
Sanilac Petroglyph State Park south of Bad Axe - a guided tour of the glyphs then beautiful hike around the grounds
Lots of puzzles, naps, reading, watching the kids run around, family meals
A couple of suggestions from my family were:
Perhaps a clothes line or drying rack available for swim clothes and beach towels
We loved the downstairs bedroom, but had hoped that the screened-in porch had open screens (there were windows nailed in place still from winter)
The dock was sagging; if we returned we would want to see it repaired (we all understood the crazy winter MI had this past year)
There was debris on the outside of the back of the house - bugs and cob webs, etc. Perhaps a power wash would help? (Although I imagine it builds up again fairly quickly..)
We had hoped to do a 2-3 hour kayak trip out of Port Austin, but the weather never cooperated. There is a longer trail by kayak to Turnip Rock, and I imagine that would be a great day adventure in that area.