Washbasin: Front wall or installation of connections in the wall

Have you lost track of your individual topics, or why are you asking about this sub-sub-aspect here again separately? Because: we are already right in the middle of your bathroom.

True, I could have asked there as well. That was more about an empty conduit, here it's about partition walls. I thought it would be better to separate that.

Since I already have a vertical pipe shaft in the corner of the bathroom where the sink will go, I could incorporate it and extend it as a false wall.

If the step is deep, you have to consider whether and how you want to hang a mirror, because with a protruding sink and step you might stand too far away from your own reflection.

If the step is low, you have to consider whether and how you want to install a mirror, because you might stand too far from your own reflection with an extensive washbasin and step.

I hadn't thought about that at all, good point. The step is max. 20 cm and the washbasin would be 50 cm.

True, I could have asked there as well. That was more about an empty conduit, here it's about drywall partitions. I thought it would be better to separate that.

I think almost only I still keep track among the forum’s "counter crew" when someone illuminates the same house with seven channels. Whether you just box in a single conduit or extend this box around the corner to place a soap dish on it, belongs in the same thread in my opinion — even main and secondary bathroom shouldn’t be separated. Otherwise, it becomes user-unfriendly — at least for multifaceted puzzle-solvers like you or . One should not turn the "user experience" of fellow discussants into a "challenge" or even an "adventure." Too much "structuring" overwhelms the community in my opinion.