"powerful router?" yes there are many, but they fall into two categories. 1) what I call a "retail router" which is not only a router, but has WiFi and a network switch; 2) what I call a "real router" which is a router with no other ‘bells and whistles’, this is in fact the correct definition of a router. I have the latter and mine is located in the cupboard under the stairs. When I decorated my home sometime ago I wired up every room including the loft with Ethernet cable. All cables lead either to the loft or the under stairs cupboard where I have PoE network switches located. I have a very automated home among other things all the lights can be controlled either by voice, iPad, wall switches or externally.