Which areas in the bathroom are tiled?

Edit: I would place the bathtub at the T-joint and the washbasin opposite on the wall. That way, you have a bathtub open on three sides, and behind it up to the top, staged with a beautiful decorative tile. The one that is also coolly illuminated and then the dream bathroom is complete

Do you have an open roof structure there?

Then tile the shower only as high as the partition wall (in our case about 220 cm), the toilet and washbasin as high as the installation base, bathtub tiled, behind the bathtub the tile height should either align with the tiles (so that no cutting is necessary) or be in some relation to the window.

We have white wall tiles and dark floor tiles and the bathtub was tiled with the floor tiles. Since we have a very bright bathroom, that looks good; without our large double casement window it would probably be a bit dark.

What I want to say: you don’t have to have the same tile height and type throughout the entire bathroom. This can also create distinct areas quite well.

Here is the shower, tiled about 220 cm high (as high as the shower partition), upwards it is open to the roof structure and therefore "floor-to-ceiling tiling" was never an option anyway.
[ATTACH alt="IMG_20200306_165958.jpg"]46147[/ATTACH]

The shower from the other side and with the washbasin – the installation base was also tiled there (the horizontal areas with the floor tiles):
[ATTACH alt="IMG_20200306_165925.jpg"]46145[/ATTACH][ATTACH alt="IMG_20200306_165941.jpg"]46146[/ATTACH]

Around the bathtub we used the tile size as a measure: to be precise; one tile above the bathtub edge:
[ATTACH alt="IMG_20200306_165913.jpg"]46144[/ATTACH]

And then extended that all around; but limited by the double casement window:
[ATTACH alt="IMG_20200306_165849.jpg"]46143[/ATTACH]

As I said: the tub was enclosed with the floor tiles and we then also took them for the wall in that corner. That fits very well because so much light comes from above through the double casement window. Otherwise it would have become too dark for me. But here with only light tiles it would probably have become glaringly bright.

But overall we have three different tile heights and I don’t think that looks inconsistent. The areas are clearly separated, that works. Of course it always depends on the bathroom.

Your shower back panel is about 2m away from the opposite wall – for us (just measured) it’s about 2.4m and in our case that wall is painted with latex paint, so water can occasionally splash on it without the wall immediately getting soaked.
So far, however, even during bigger shower sessions, we’ve never sprayed water all the way to the wall, just the floor gets wet up to about 2.2m. That would mean that your wall could get some water damage on the lower part. So maybe tile up to the window sill height?

By the way, I find Alessandro’s suggestion worth considering, whether the washbasin and bathtub should swap places.

we also have concrete look on the floor and white-beige on the wall. can take a photo in the evening. only have tiles in the area of the bathtub
shower should be full height. I think a piece tiled under the window is okay. tiles up to the bathtub wouldn't be my thing, then you might as well tile the whole room (except shower half height)

Oh yes.. a picture would be great. We are still deciding whether to take light gray or beige tiles. Thank you very much for your effort.
Yeah, I also think it’s not really my thing to tile the whole wall up to the bathtub halfway.

I think you can somewhat recognize it. Tiles are "sand-colored," so with a bit of beige. Tiles are cream with beige marbling. Everything is still bare, and the wall under the window had to be replastered and has not yet been painted.