Its just some kind of entertainment, don't take it serious.
Its just a "way'" to shoot the story..not a real one..i think maybe those riches only spend 10 hours in shooting..not everyday..not 1 week too.
Just a way to shoot a drama like programme.Stay an hour in a small flat..speak some kind of feeling..then after editing can make you believe that he has been staying in the flat for a few days..