Bathroom walls design is indeed important for the whole picture of the bathroom and its aspects. For instance, colour of the walls plays huge role in making bathroom look smaller or bigger. Depending on the bathroom location in the house and the presence of the window you might prefer to have a special 4×4 ceramic bathroom wall tile which are considered the best size to work with.
Since such ceramic tiles have a square shape, it is easy to fit them onto the wall because of the fine edges. Also they may have a brilliant but surprising pattern to make the wall look great. Some bathroom design ideas are offering to use gloss tiles to add more light to the space. The same visual effect can be done with the help of the light tones of the ceramic tiles meant for the bathroom walls.
Don’t forget to use some pictures from the internet in order to understand how the idea might be working or not.