Currently I am running a 3rd gen Airport Extreme extended by an Airport Express. My apartment is quite long and I am not getting coverage. As you can see in the attached floor plan, I have the Extreme in the study (front of the apartment) and the Express in the bedroom. I get lousy coverage in the dining room and kitchen. Making things complicated is the light well in the middle of the apartment. That means I've got external brick and concrete walls between the two routers. Would a mesh network help? Could I essentially snake the signal around and through the hallway? Or would simply having a newer, better router/extender system help? Am I totally not grasping how Wifi networks work?