Either tiles or wooden floors can be used. Tiles should be a rustic colour, and can be used to create elaborate mosaics. Wooden floors should be varnished to match the furniture. Decorating may see a stenciled motif used as a border, and the technique of rubbing paint on the walls with a sponge gives the room that worn natural look.
It can be fun to change up the faucet design you will have in place for your bathroom though. You can transform it into something elegant if you want to give it an upscale feel without a huge expense. It is a good idea to look at images so you can see the various options available.
For the sanitary ware go with wall-hung or standard close-coupled toilet and basin with pedestal with acute angles and a contemporary design. Abstract towel rails and wenge wall-hung furniture fit well in the fantasy bathroom, giving it that calm almost surreal look.