I build custom showers in New York City.

It is a beautyful idea to have the towel shelf beside the shower. All the components mirror, lights, color, tiles are good designed. But why is the WC so close to the shelf ( looks like a distance of 15 cm). It might be an artisic act to get a towel.

Funny. I just came back from a week in Berlin, and I saw mostly excellent and some surprisingly bad design there. The "WC" as you say is 15 inches not "cm" from center to the wall, (or shelf) as per code around here. I notched a joist to get it exactly where the client wanted it, so they have space between the sink and toilet. I also added jambs for doors over the towel niche, but so far they have not asked me to install doors. This came up in an earlier comment. I better put some new photos up. From what land are you viewing my work?

Ah, I see now, Scott-land. Thanks for complements from there.