We're looking at possible vacation houses to rent for a couple of nights during the summer and I'm curious to hear what people think. Cousins are two girls, ages 11 and 9, and DS, age 6. Would you be ok with the kids sleeping in the same room? Each would have their own bed. If it makes any difference, these are not cousins who see each other frequently. If you do think it would be ok, is there an age when you would say it is not ok?