Possibilities of bathroom design

We have this here with the mentioned 140cm solution, but maybe it is different with a larger shower like yours. Our glass goes up to just below the ceiling, where there is a small gap holding the ceiling bracket for the pane. There are no problems like mold or anything. Of course, it probably depends on the general ventilation and showering behavior; I usually have the window tilted. As I read earlier, someone reports that they like to shower for 20 minutes straight and as long as it takes to completely empty the hot water tank— Regardless of the fact that this could already be grounds for divorce, it should naturally also be seen differently regarding ventilation/mold. For such and similar cases, I would also give an absolute YES to any possible kind of good ventilation—

I have not seen a bathroom yet that does not have mold in the corners after 15 years. Not as horrific as shown on RTL, but small corners, especially in the shower.

The design from post #33 is successful. I would invest some "brains" into the hinges and door and not just look at the bathroom area, but also ask a glazier. He had a great and very affordable solution for our bathroom in the terraced house in 2001.

Do you happen to have a few pictures of that?

I would take a smaller washbasin. Actually, no one needs more than 80cm to wash without getting wet. The rest is luxury. You can mount storage and shelves around it on the walls if that is the reason for the large washbasin.
Make sure to install ventilation over the shower, otherwise the shower will get moldy spots.

Do you ventilate the entire room or just put ventilation over the shower?
The glass wall should not be pulled all the way up.

The ventilation (controlled residential ventilation) is installed in the ceiling above the "foot end" of the shower. So far, it works well because the shower is also ventilated. It is even better ventilated than the rest of the bathroom because the air first flows along the glass shower wall inside the shower, is heated in the process, rises upwards, and then spreads into the room above the glass wall. I notice this when I dry laundry: it dries faster in the shower than in the bathroom room. One ventilation is sufficient; only the location should be carefully considered.

Am I correct in assuming that this ventilation goes outside or do I have to ask stupidly what the abbreviation Kontrollierte-Wohnraumlüftung means? Unfortunately, it doesn't mean anything to me.

EDIT: searching online afterwards helps KLW - controlled residential ventilation

Is the mold really still that bad if the underfloor heating is also installed underneath? It will probably be installed in my case to achieve the desired temperature.