Better Gone Than Seen!
When it comes to outdated wallpaper or borders on your walls, it is far better to remove them before your showings start. Kids rooms tend to be the exception as most kids like the same things; but everything else should go. This a because when buyers look at wallpaper most just see the daunting task of taking it down. They immediately get concerned about how to take it down, if the wall is going to be damaged and how much the whole process is going to cost them.
Take a look at Bathroom A versus Bathroom B