Personally, years ago, I bought some inexpensive ethernet powerline adapters, which I put in a few rooms in the house (and at the router) and then cheap wifi access points plugged in to those adapters for those rooms where I wanted to extend the signal to. This solution worked extremely well in our home as it is very long end to end, with the internet router at one end. I did not have success with range extenders or more recently when I tried a mesh network. The nice thing in my solution is that the access point provides a very strong wifi signal in the room where it's located, and going directly in to the powerline adapter is like having a wired connection from that point. The powerline adapters are slower than direct wired, but, our internet is 11Mbps DSL, so the powerline is certainly not constraining our throughput relative to our internet connection. This solution has worked really well, for probably 10 years now, whether we are at the other end of the house or in the basement. The powerline adapters also work really well with the multiple Roku streamers we have in the house - significantly better than the wifi signal, even from the router to the adjacent room. I see that there are now combination wifi powerline adapters which do what I did but in a single package.
https://www.amazon.com/TP-Link-AV600-Powerline-WiFi-Extender/dp/B00HSQAIQU
For daughter, I actually just sent her a Netgear WiFi Range Extender EX5000 for her two story apartment they just moved in to, as they are having signal issues there. For her, distance isn't so much an issue as up/down through the floor. It's supposed to be arriving today from Amazon - I'll report back tonight/tomorrow once they have it hooked up.