A nice bathroom area with a toilet, using an upside-down quartz block for the toilet and a player head that is designed to look like a toilet paper roll. I added a rug by placing signs in the floor and carpet onto of the signs to create a detailed look.
(Submitted by sagemcbride)
Stairs are used to create this bathtub. Use A full block at the end to place your faucet.
A Minecraft Shower design. All built on a slab floor. Using Glass Panes and a lever activated water fall. Also in picture are some Towel Racks (Ladders).
Toilet and Washbasin.
See this bathroom tutorial in the video below: