Assisted living residences vary dramatically in size. You can find small, home based living housing only a few residents to large campuses housing thousands. Each type will have different options in size of living space as well.
You’ll first need to consider the size of facility that you or your parent or loved one would be most comfortable in. A larger community may offer more socialization, but that aspect would not interest someone who has been an introvert with a small, close group of friends. Larger residences may offer care in different buildings. If so, ask about when and how a resident moves from one level of care to another.
Many residences only offer rooms, while some offer private condos or apartments. Some have shared living areas where 2 or more residents may sleep or live. You may find apartments or living spaces that are furnished. In this case, you can personalize the living space to make it feel more like “home”. Sizes are definitely a personal matter, but remember that bigger is not necessarily better and smaller does not guarantee more care.