The size of tiles is totally dependent on the customers preference, however there are a few rules and best practices when it comes to choosing the size. Generally; larger tiles can make a small room feel bigger and create an illusion of more space; smaller tiles will generate more grout lines which can look busier yet have more of a visual impact but bearing in mind that more maintenance is involved with the upkeep; mixing tile sizes in an area produces a unique effect to a room e.g. (wall) large 600mmx300mm laid horizontal with a mosaic horizontal border at chest height with the larger tiles situated on top of the border the same method can be applied vertically thus generating very different ‘looks’.