Thanks, I don't have any ethernet sockets in the house unfortunately. I was also considering those powerline adapters but heard mixed reviews. The only other option would be mesh wifi but that's much more expensive.
Power line adapters, as long as you don’t cheap out, can be very good.
For me, in order of performance it’s Ethernet > PowerLine > Wireless.
But as others will testify, YMMV with PowerLine.