Porcelain or ceramic tiles are the most widely used bathroom tiles. They are highly durable, waterproof and come in many shades and designs. They are also cheaper than other materials available. They can, however, be slippery when they are wet, so if you go for textured tiles in the wet area, they might prove to be safer. Natural stone is another option but it is difficult to install and also gets slippery. An interesting alternative is vinyl flooring that has been made waterproof. This comes in the form of planks or even tiles. But do carefully consider what you want and what works best in your space.