Stairs are a good idea.
Bench is nice. Towel storage too.
very cool tile!
Interesting idea about the two panes of glass in the shower
controls mounted where you can reach them without getting wet
Plan niches ahead of time to match with your tile pattern
fog free mirror, spot for razor. Does Ed want special lighting?
build into half wall next to toilet
remember to plan ahead for these.
make sure to add extra insulation in the nooks on an outside wall to cut down on cold spots
Add a 3/4 inch supply line to the tub and shower. Not green but better experience