My siblings and I gathered from across country to celebrate my brother's wedding; we used the rental as "wedding annex"--the place to eat and rest as little bro's wedding was at their house. It was perfect--lots and lots of space up and down. We were all reminded of the grandparents' "new" house, in the 1960's and 70's, where we grew up gathering with aunts, uncles and cousins--kids heading to the basement rec room, picnic table doubling as thanksgiving family table. There is a large back yard which would be fun for summer games.
If you have a family reunion in Rockford, this is the place--super clean, everything you need in the kitchen (even a dishwasher and lots and lots of plates), and, split between two or three adults, the price can't be beat.