A wall hung toilet can provide both style and grace to a modern bathroom, but be sure to do your homework before installing such a unit.
It is advisable to speak to a plumber or bathroom designer to determine whether the room is suitable and the structure is sound. If not, metal frames can be used, but this needs to fall within the budget you are happy to spend.
If you really are looking for that luxury look, the investment will be worth it, but if not, it's advisable to use a more traditional style that will be simpler to replace.