So in this flat I have a fiber connection, with a PON. I plugged in my own Archer C6, flashed OpenWRT on it, and flubbed with configuration until I got it to work (I wasn't very familiar with OpenWRT, ...
I have an Asus RT-AC5300 and a house with a large footprint. I currently have wire going through my basement to a simple unmanaged GbE switch in my entertainment center on the other side of the house.