I rent out a 2 flat in Chicago. They are both 3 bedroom units. The 1st floor unit is rented out to a family of 4. The second unit I just recently rented out a family of 5 which includes 2 adults and 3 children under the age of 5. The 1st floor tenant is complaining that the kids are too loud and wants to break his lease early and move out because of it. I don't think he has any merit but I can see him being a jerk about it.