Ambient lighting can be accomplished be placing small halogen bulbs at the back of the painting or decoration pieces housed in their cabinet sections. The textures chosen for this should be as follows. The wall should be painted with a very smooth finish emulsion, wallpapers should be avoided here, and the decoration pieces with their shelves should be dull and matted. They should not be shinny and glittery. Basically their security level should be kept in check.
In a small bathroom, less is always more. If you include a vanity, you will probably need to choose a very small unit. Depending on your needs, you can choose the style (cabinet or drawers or a combination) that is most suited to your needs. Recessed medicine cabinets (set into the wall, with an unframed mirror) are ideal in small bathrooms.