Thanks for the tip. Unfortunately, we forgot to lay LAN cables out to the terrace upfront. During the construction phase when we could run cables through the facade, everything went extremely fast. However, we will have to lay some LAN cables to the parking spaces anyway (Wallboxes). I'll just add some additional ones and run them sideways to the terrace (house wall). Our balcony will also come sometime in the summer; it will have internal drainage. We can probably also run a LAN cable up in another support and use it for another FlexHD. Actually, I also wanted to install a Freifunk router (because of Störer Haftung) as guest WLAN. If I can still accommodate it reasonably well aesthetically, I'll take care of it at the same time.