[epcoa]

Chicago has an abundance of deep narrow lots. It isn't uncommon to have to have apartment units that are 14-15 (4.5m) feet wide and up to 80 feet (25m) long, a hallway runs on one side with bed/bathrooms adjacent. There is no way you can adequately cover this with one AP unless you don't care about speed much on one end of the unit. If you want uniform top 5GHz speeds you're going to need 2 or 3 APs.