I do not have a personal preference. However, Onyx is a natural stone that can be used in a bathroom as a decorative element on walls, floors, vanities, and shower enclosures. It is important to note that onyx is a relatively soft stone and requires maintenance to keep it in good condition. It is also susceptible to etching and staining from acidic substances, so it is recommended to seal it regularly and avoid exposing it to harsh chemicals.