We had a wonderful time, loved the house, and have already reserved it for next year. With just the 10 of us we had tons of room and could easily have fit more people. The area had a wide variety of things to do, enough to keep both the outdoorsy family members and the video game addicts happy. The kids loved the playhouse and having their own space to hang out upstairs. The adults congregated mostly in the kitchen and on the porch.
We found the house well-equipped and didn't really need any extras. The household items I'd bring again are liquid hand soap (if you prefer liquid to bar soap), paper towels, extra dish towels, and maybe aluminum foil for grilling. I sometimes bring my own pillow and mattress topper when I travel but I totally didn't need them because the mattresses and pillows were plenty comfortable without.
A few minor corrections to the listing: We double-checked the fireworks schedule before going and found out that they're no longer every Friday. We lucked out and happened to be there for a Saturday display but they're not an every week thing. And the Juliet balcony in the pics is currently unavailable for safety reasons. Plus, although there were some puzzles and other pastimes scattered about the house, the huge pile of board games shown in the laundry room photo was nowhere to be found—it wasn't a big deal, we just would have brought some of our own if we'd known. All the same, we loved the place enough to grab it again for next year!