Network outlets - Access points / Wi-Fi extenders

Does today's youth no longer learn to use search functions at all (even if the local one here is unfortunately Kreisliga D)? - the master thread on the topic is

I assume that you don't have LAN cables hanging from a socket on the ceiling, to which you could connect a PoE-capable access point, but rather that you have network sockets near the baseboards in different rooms. Two possible solutions come to my mind spontaneously.

Either you use the already mentioned AVM repeaters. They have the advantage that you can administer the WLAN via the Fritzbox, can keep it switched on, and can build a mesh with the Fritzbox's WLAN. However, they have the disadvantage that AVM so far does not offer Power-over-Ethernet, so you always have to plug the repeaters into a power outlet (near the network socket). That means you then connect the repeater in the power outlet by Ethernet cable to the network socket.

Alternatively, I could imagine the Ubiquiti Unifi In-Wall HDs -- they operate via Power-over-Ethernet (thus needing no power outlet, but a PoE switch or at least injectors) and simultaneously offer four LAN ports. The disadvantage is that you should set up a separate Wi-Fi network for these, as I am not aware that a mesh between Fritzbox and the Unifis works well.

However, with both solutions, you should always set up a Wi-Fi network (basically using the same SSID and the same encryption and key). Administration is possible and easy with both AVM and Ubiquiti.