With 13 adults and seven children sleeping on site, plus six joining for Thanksgiving day, it was a good venue for a large group. Super advantage to have two full kitchens, plus a third refrigerator and microwave for all the food preparation and juggling feeding kids in between. Good supply of tableware and cooking equipment. In warmer weather there would be a nice large picnic table outside, but the host added a long folding table and chairs that we put up between the living room and kitchen which, with the main dining table, accommodated most adults for sit-down dining .
Downsides for our group, who do lots of activities like games as well as conversation, were that there is really only one moderately large room contiguous with the kitchen for everyone to gather in (and so tends to be pretty noisy), and the second floor of the venue requires going outside to access (which was less than ideal with kids running around in bare feet and pajamas). Although the second floor had a sitting area, this was less useful for us because it segregated activity too much and was hard to access for the older folks in the family. On the plus side, it provided a usually quiet escape for some of us.
Wonderful fire pit out near the water with plenty of chairs and lots of wood available. And only a short walk to a nice sandy beach for alternative entertainment of the children.