Why not use Powerline Ethernet? In most houses, it's typically fast and reliable and requires no extra wires. E.g. the data rate between my desk and router is currently 784 Mbit/s.
Cheap ones suffer from the same problems as cheap routers, randomly hanging and requiring a physical plug / unplug when the room gets hot, or whatever other interferences degrade their performance over time.
Expensive ones are still not 100% reliable, and most of the time will cost more than a well done ethernet installation.
Of course, as a sibling said, it'll depend a lot on the wiring and/or other connected devices. So I guess it's best to try with a borrowed pair of adapters first.
Also, avoid TP-Link adapters as they seem to have some issue coming out of powersave mode that means I have to ping something all day to prevent them from sleeping
I'm renting the house, and wherever I move next probably won't have this problem.
In the UK I have had very few problems with powerline one failed through over heating and had an issue when we had our solar panels installed as the POS Netgear router didn't implement STP and we had a broadcast storm