How can I update this bathroom? (Renting)

Me and my bf found a really nice place but the bathroom looks like it was done ages ago and is terrible. What can I do other than a major deep clean to make it look nicer that can be put back to the way it was if the landlord doesn’t like it? Im going to take down the mirror and put a nice one and repaint the cabinets, it’ll have a shower curtain and an over the toilet cupboard. I know we can get floor tiles that are stick and peel and that can easily be removed but the walls are what really bug me. Any suggestions?

Me and my bf found a really nice place but the bathroom looks like it was done ages ago and is terrible. What can I do other than a major deep clean to make it look nicer that can be put back to the way it was if the landlord doesn’t like it? Im going to take down the mirror and put a nice one and repaint the cabinets, it’ll have a shower curtain and an over the toilet cupboard. I know we can get floor tiles that are stick and peel and that can easily be removed but the walls are what really bug me. Any suggestions?