Update a bathroom - can't paint

[pharmacoco]

Hello,

Moving into rented accommodation, any ideas how to brighten up a bathroom?! No painting allowed and bathroom must be reverted to original stance upon leaving.

A new shower curtain with some colour would make the room look more cheerful and you could replace it with the original when you move out?

Change the shower curtain to a nice colourful one, also a colourful pedestal set, maybe a window sticker.

New shower curtain, bright bath maths and towels.

Mats and towels in fab colours
Tall green plant in a lovely pot