You'll just have to try, it depends a lot on your home wiring and can be interfered by so many things. But if it works it's definitely nicer and more stable than WiFi.
1. It works terribly if you use more than 2. There's just some bug in the L2 switching where it will get confused about the destination; broadcast packets get through, but some packets to specific hosts don't go through. Rebooting the adapter fixes it temporarily. I ended up moving one device to WiFi and as a pair it works reliably
2. The firmware it ships with is a bit limited, but they provided me with something more configurable when I contacted support about issue #1
In most other cases, quality WiFi equipment performed better and was more stable.
Last year I moved to a new place and faced the same issue of wanting internet in a different room and tried the Devolos again. Same experience except worse speed. Again I had to fall back to WiFi, which at least gets me ~150Mbps here.
Powerline is much less faf than using wifi even more so for non networking types.
I have Devolo Magic2 G.hn powerline adapters. In my rental UK apartment (1990 or so vintage), I can barely get 100 Mbps for the 10 meters or so from my office to the living room. The same units with mesh-wifi sync at around 300 Mbps in my parents' much larger 1980 vintage house in France. Perhaps the difference is due to the UK's crackpot ring electrical standard.
I wish someone would make laser free-space optics for in-home use (they are available for company campus networks).
WiFi 6E adds a full GHz of bandwidth in the 6GHz band and should dramatically improve congestion, but you will still need multiple access points with some form of wired backhaul to get reliable WiFi.
I also tried using a mesh wifi network, and was able to bounce a signal around the dead zone and get a WiFi signal with a higher bandwidth than the powerline ethernet, but I still found I got a lot of glitches in video calls, so went back to the powerline ethernet.
I've not noticed the problems other commenters here had with their adapters with the AV2000.
I initially tried a cheaper powerline ethernet, and it was worse than WiFi, so I'd recommend you buy the most expensive/best one that you can afford.
Every once in a while they lose connection (maybe once a month).
The speed is not great (~300Mbps) but I don't care because my inet connection is only 100Mbps. The latency is better than wifi, and really consistent (unlike wifi):
--- 192.168.1.1 ping statistics ---
18 packets transmitted, 18 received, 0% packet loss, time 48ms
rtt min/avg/max/mdev = 1.975/2.669/4.884/0.617 ms
So yes there are adapters that are decent, but you need to aim for the fastest ones because real-world performance seems to be 1/10th of the advertised performance.
Anything that converts long runs of unshielded cable into an incoherent broadband transmitting antenna should fail FCC certification, yet they're still on sale.
The cabling runs through the ceiling and dropped down to port height via electrical conduit on the external side of the wall. It was expensive but I would have paid more considering the quality of life improvement.
So I've settled on using rubber cable floor covers. They don't look very good, but they're perfectly practical: cheap, much reduced trip risk, no need to open up the walls or tape/nail anything to them to get everything arranged.
(Not sure how I'd feel about this on a permanent basis, though. Once it's back to just me, my laptop, my iPad, and my phone, the internet connection will be the bottleneck again, and I'll be switching back to nothing but wifi...)