If you'll have to share a room, find out whether you have a say about who you share with. If there are commodes in shared rooms make sure there are screens or curtains around them. Some homes give you more freedom than others. Ask how much of your own furniture and possessions you can bring with you and whether the room can be decorated to personal taste. Check also the home's policy on keeping pets.
Some homes have a more structured routine than others.
See if visitors can stay for a meal or overnight. Find out what sort of activities are offered and how much say you have in what is organised.