I have decided to make an interior mostly in white and neutral colors, which makes the bathroom looks a bit bigger. On the floor is used 60X30 cm concrete texture tiles, decorative wall 10X10 cm white tiles, and on the entire walls 60X30 cm grey white marble tiles. For the washing basin, I have chosen a place in front of the entrance door, so when you enter the bathroom you will be able to see the most beautiful part of it. For the Shower, WC, and bidet I have decided to add a 15cm wall detail, 130 cm height, where the WC and bidet will be hanging, up to that wall will be an open space for decorative shelves, in the shower area this decorative wall is from the bottom to the ceiling and has built-in shelves inside, for reference please have a look at the renders.
Hope you will like my design. :)