My ideas
I like the clean lines of these cupboards with no knobs that could work in the main bathroom
Shelving above the toilet and shelving whenever possible a good idea for apartment that is light on space and shelving. This could take a load off the vanity unit keep the shelf around the basin clear.
I like the “hidden toilet” idea
I like the idea of keeping a hairdryer and straighter in a draw fully connected for easy use.
Hair station on far right - mirror lighting
Q