With usage of reflecting materials we created a "bigger" space.
Usage of black ceramics on the floor creates a contrast to the white furniture and fixtures (sink, white frosted glass in the shower, tailor made cabinet for clothes dryer, wc and bidet, radiator and mirrors).
Bi folding doors are used both in entarance as well as the shower due to small dimensions of the bathroom so they are reducing space.
The shower is imagined with a frosted glass (or you can choose a reflecting glass for more privacy) so that others can use the bathroom at the same time as someone is at the shower (if you feel comfortable enough). Separating shower with a wall would cause the lack of the sunlight in the rest of the bathroom so I think that this is a better solution.
In this project I left the small wall beside the shower so it can be used as a shelf in the shower and it divides a space between wc and bidet and a shower as a unit.
Due to small dimensions and lack of space I suggest that you take the smaller dryer and the place in front of the window is a perfect place for it because it doesn't take up much usable space and you can tailor a simple cabinet for it so no one knows it's a dryer.
Mirrors opposite of sink make bathroom wider and give you the possibility to take a look at your whole self which is important when you are getting ready to go somewhere.
Cabinets under the sink (which is big) give you enough storage space but you can always add a shelf on the right in case you think that's not enough.