One nice thing about my rented house is that a previous owner (possibly my landlord) ran an ethernet from the lounge at the front right to the small bedroom at the back, upstairs. So, router > Deco node > ethernet > Deco node > 1gbps switch. Then I have three PCs upstairs wired to that switch, and they all get the full glory of our 1gbps fibre.

But, like, the rent is almost £1400 a month, so...