Solutions to decorate Japanese 3-point unit bath.

Hello,
I just got my own apartment in Japan. I am excited to decorate some parts of it. I have been thinking about the bathroom and how I want to add more storage space and find a solution for the floor. I am considering getting a shower curtain, and looking at solutions for shelves on top of the toilet. What are some solutions you have for your bathroom? And where did you buy it?
I am also open to suggestions of stores I can go to buy furniture for bathrooms.

Here is a link for my current bathroom and another photo of a bathroom floor that I like.
https://imgur.com/a/BUJusqd

by beemolikes