tub/shower combo with no doors/curtains I just LOVE the idea of NO tracks or doors or anything to get all gunky! I hate the shower/tub situation usually, but I could possibly deal with it if it was a sunken bath.
The floor tile in this bathroom by Mark Reilly Architecture is Heath Ceramics' Half Hex Mix. The walls are beveled subway tile (click the link and scroll down for sources). - 10 Bathrooms with Showstopping Tile Plus Where to Find It