Students usually use to change their tenements very often. The reason for that is that usually they study in a town away from their own. One solution to the problem is to live in a dormitory. But not always there are places for all students there. So they look for apartments or a house. There are a very few students wealthy enough to live on their own others usually live two , three, four and even till eight people in a house or apartment. After all it is cheaper to separate the rent between the tenants.