Yeah numerous times.
We usually shared a house at the beach with a family and it worked out perfect.
You really have to decide what kind of people you all are. For example all of us were laid back so everyone just did their own thing.
Breakfast and Lunch everyone just ate something light and then for dinner the men had a barbecue while the women made salad, potatoes etc.
It was really fun for me because I am an only child and and the other family had more children for me to hang out with because lets face it what teenager wants to spend his summer vacation just with his parents.