Hi,
I have gone for a Scandinavian style for your bathroom.
Here are some highlights
1) A Black & White Approach to this bathroom. The shower area gets a black makeover with black glossy tiles on the walls and with a white floor tile that covers the entire space.
2) A Seamless Mirror fixed onto a backboard along with ample storage
3) Plants, Ladder Storage, Minimal Painting and an emphasis on bringing more light to your bathroom.