It seems that we see more traditional baths published than modern ones.  I was very pleased to see an example of the Waterworks modern .25 tub in AtHome magazine recently. This particular house has traditional elements, but the tub seems right at home.  The right choice of materials, artfully layered, as well as beautiful textures and art make this a cohesive design.

The exposed tub filler on legs adds another modern element.  However, another way to accommodate a tub filler is to build a plinth and install wall mounted fittings. The wood floor adds warmth and becomes the transition between the more transitional aspects of the house and the tub. Of course, the infusion of natural light adds warmth to the space.