How can I hide ugly bathroom walls?

Please attach a picture. The bad walls are where in bathroom and what's wrong with them? Made of what?

Since most baths are small, it doesn't take long to skim coat the walls with joint compound and 12" drywall knife.... https://www.youtube.com/watch?v=mE9Hc_jqvbw

Don't forget to prime the wall afterwards and use a semi-gloss paint to ward off future problems.

Could you take a photo and upload it here. It would help to see what you are talking about.

You could add wallpaper, large artwork, or paint!

Although it may be temping to slap something up over top of the walls to try to 'hide' how they look, this often invites many problems with moisture not being able to escape, mildew developing, and walls rotting.

Hello, you could put up panels to cover the ugly and add some character, hope this helps

https://www.youtube.com/watch?v=eszyqa4tDrI