WLAN repeater or access point?

Alternatively, buy a very flat one and hide it behind a dresser or something like that. I wouldn't know any particular added value of an access point on the ceiling now.

Almost all APs are designed so that optimal coverage is only achieved with ceiling mounting. The internal antennas are arranged to produce coverage in the shape of a bell. So if you screw the access point roughly in the middle of the floor to the ceiling, you get good reception everywhere. If, on the other hand, you screw it to the wall, reception on one side of the house is rather poor.

Ideally, mount an access point on the ceiling on each floor: upstairs, ground floor, and basement. As already mentioned, I would recommend PoE; then it is sufficient to lay just one LAN cable.

Almost all APs are designed so that optimal coverage is only achieved with ceiling mounting. The internal antennas are arranged in such a way that the coverage creates a bell shape. So if you screw the access point roughly in the middle of the floor to the ceiling, you get good reception everywhere. If you screw it to the wall, on the other hand, the reception on one side of the house is rather poor.

In the optimal case, mount one access point each to the ceiling in the upper floor, the ground floor, and the basement. As already described, I would recommend PoE, then it is sufficient to lay a LAN cable.

Could you please explain to me what the access point point is electrically supposed to be? What should I tell the electrician? Is it a completely different connection than the network cable connection? Can I connect a router to that connection?

just to make it clear:

an Access Point is basically a repeater, except that it gets its signal via a network cable and not via WLAN. a repeater gets its signal via WLAN and thus amplifies the signal. an Access Point gets its signal via network cable and either sets up a new WLAN network or the same network as the actual router (with the same ssid) and amplifies it. the advantage of the same ssid is that you only have 1 WLAN throughout the house and the devices always communicate via the stronger device. optimal for tablets/phones. a PC or NAS systems should never be connected via WLAN but with 1gbit network.

with the market leader avm, you can switch between repeater and Access Point via settings.

for the house planners: you need a LAN cable from the router location (utility room? definitely near the Telekom/network provider connection) to the place where you want to amplify your WLAN (e.g. upper floor due to thick steel ceiling).

Socket is enough, plug in the repeater, done.

Socket is enough, plug in repeater, done.

not if the WLAN signal from the ground floor does not reach the upper floor. then absolutely nothing happens. the access point (connection via LAN) is clearly to be preferred!

Why does it take so long to think about this when constructing a new building? Cable to the access point (every floor) and you always have the optimal signal.

A cable connection should be preferred for all fixed devices; stable, fast, flexible, and secure for the future.