Another bath inside whower idea: factory window shower - the BEST idea! Imagine this done huge-Japanese-bathroom style with an old claw-foot tub in an oversized shower, so you could have overflowy baths in a shower the size of a small room.
A Hamptons Master Bath---love the shower enclosure! the framing of the shower doors, all the marble in the flooring the walls, the sink countertops. The vanity should have been one long one done higher and better. Love the little stool.