Floor plan optimization city villa + fill consideration

Do young people today actually no longer learn to use search functions (even if the local ones are unfortunately Kreisliga D) ? - the master thread on the topic is

Where do you actually place the WLAN router?
I don’t want to have it visible anywhere.

You probably mean the access point, of which you should also have several in the house. The access point is the nearest "radio tower" for your wireless end devices, ideally connected by cable to the "router," and should have unobstructed wireless "line of sight" contact with the end devices. Any attenuation caused by obstacles or interference fields results in the transmission power of the participants being unnecessarily increased. If you want to turn your house into a microwave oven, then place the access points directly behind obstacles.
You should therefore position your access points on walls or ceilings. On ceilings they are discreet like smoke detectors, or you can place them on cabinets, which recommends LAN sockets near the ceiling there – see the aforementioned thread for details.
What you call "router" typically stands/hangs anyway in the HAR and is not a router, but rather contains one or its function. It is called an IAD (Internet Access Device) and your provider will call it "Fritzbox Cable," "Homebox," "Speedport," or some other "T-Entertain gimmick." Usually, it does have little antennas attached, but you will hardly want to hang out in the HAR with your tablet – that is why one or two additional access points per floor are usually installed, connected via LAN to the IAD. Typical practical locations for access points are in a wall lamp position in the living-dining area or in a smoke detector position above the stairwell exit; see details in the aforementioned thread.

I just asked my husband again why we have sockets for the APs when it also works without them. It might have already been mentioned in the other thread, I didn't go through all the pages. On the one hand, it's because we already have the appropriate devices for it. On the other hand, he says that not enough power comes through the LAN cable and that this can impair the transmission power. You still have a bit of time to find the best solution for you.

Ok thanks to you. I will read the thread.

Thanks!

You better discuss underground conduits for civil engineering long before the electrician steps onto the scene. Even an awning in an energy-saving regulation house with ETICS and a cable feed-through that shouldn’t ruin the blower door test is no longer a simple task that Uncle Horst can just take care of while Bernd sets up the grill. You really can ask refreshingly naive questions

But at least I ask the questions before building starts.
Regarding conduits/cables to the garden shed, the builder said I should only discuss that when talking to the electrician about electrical work.

Something/many things will go wrong anyway. That’s why I’m making an effort beforehand. In the end, I might still end up without electricity in the garden shed. But I can live with that.

But I don’t want to live without an awning.
Two awning dealers said the awning will only be installed once the house is standing. It will probably be mounted on the partition wall.
What does an awning have to do with structural engineering? Isn’t structural engineering only about energy values then?
You can retrofit an awning after building the house, right? Then the blower door test would already have been done.
What’s it about when considering an awning during new construction? Is it only about cable preparation for the motor? Why does it ruin the values?

Should you plan an awning after the build or must the cable preparation already be done during the construction phase? You can retrofit awnings after all.

I’m a bit confused.

Are you getting insulation on the facade?

I just asked my husband again why we have sockets for the APs when it also works without them. [...] that there isn’t enough power coming through the LAN cable and that this can worsen the transmission power.

The access points need not only a connection to the "router" but also power. In principle, this can also be done via "Power over Ethernet," meaning the power comes through the LAN cable. However, Gigabit Ethernet already uses all four wire pairs for data transmission. But that is a wide topic.

Regarding empty conduits/cables to the garden house, the builder said I should only discuss it when dealing with the electrician about the electrical work.

If the electrician wants to scribble on the shell walls with you about where sockets should go, that is naturally long after the foundation slab has been completed, under which the empty conduit leading to the garden house should be installed – compare

Two awning dealers said that the awning will only be installed once the house stands. It will probably be fixed in the partition wall.
What does the awning have to do with statics? Statics is only about energy values, right?

The awning needs a stable anchoring in the wall; you don’t just stick it on the ETICS like a little adhesive hook for a dish towel. If the awning is to be operated by an electric motor, a cable must run through the exterior wall to it, and this cable feedthrough should be airtight. How you get from blower door tests to structural engineers escapes me. For medium-heavy things like satellite dishes on ETICS walls, there are special mounting systems – whether there are kind of “isolation baskets” or such for awnings, I don’t know. Awnings are too retro for me; I’m not interested in them.