I've been working on a Cloakroom concept recently - plenty of textures to create a classic look with a fresh coastal twist.
Don't be afraid of using wallpaper in a well-ventilated Cloakroom for visual impact.
There is a wallpaper out there for every room in the house. Just do your research to make sure that your favourite wallpaper is fit for purpose.
You can also treat it with a suitable protecting coat for extra care. Again check with the supplier for a compatible product. If in doubt test drive a sample of the wallpaper for peace of mind.