Quite a lot going on here, thanks!
Better is always possible, but roof tiles, Braas
The roof tiles are concrete roof tiles from BRAAS, however, we haven't talked about any sealing/coating or the like. Thanks for the tip! We will probably skip that though...
We are still undecided about the finishing of the walls and ceilings. I first have to see how the walls and ceilings actually look and feel. I'll ask for a current site inspection, let's see what the response is...
because you can tell that the money for the baseboards is no longer there, but they are somehow mandatory.
And that's exactly what it's about for me. They are actually not in the contract and are therefore included in the "Miscellaneous" list.
Overall, I find dealing with LAN sockets rather unpleasant. However, it is still worth the extra cost to me because later WLAN problems can be more expensive. Unfortunately, a friend of mine had to painfully realize this. As an electrical engineer, I can think of plenty of other things that can be operated with such sockets, but that's an unrelated topic. The Devolo setup also works perfectly – however, you have to pay dearly for performance and low latency...