Many large toilet tiles are rectangular as an alternative to square, and some people look better spread tightly together, which has a fine line involving grout between these individuals. This works in particular well with sleek tiles. The reduced amount of grout between that glossy tiles, that glossier the tiles will probably look.
If you're not necessarily crazy about thinking about tiling all that walls, you could tile the walls around eye level, or whatever level you decide on. This will not alone leave you another part of the wall for you to paint, so you may add another color into the bathroom, but which creates the option of experiencing a border.
Finally, having all the walls within your bathroom tiled not just makes for some other look, but the walls will be much easier to completely clean because you can certainly just run any sponge or mop with the tiles.
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