Such finishing as antique bathroom floor tile is getting quite popular in modern days. Such bathroom will look wonderful and magnificent but it should conform with the general design ideas of the whole house or apartment.
To make your bathroom indeed unique and standing alone you may combine historic background and antique elements a part of the contemporary ultra modern style with minimalism furniture. Another great idea would be to use classic art-decor with the antique tiles laid onto the walls or floors in the bathroom. For such style you need to use simple geometric lines and luxury elements and items.
To check all the possible ideas, pictures and photos you might need to perform some research, to visit shops and expos, to surf virtual space.