Steven's Bathroom is located in the Beach House. This is the area in which Steven prepares for the day, and also where Peridot was kept. It debuted in "Catch and Release" after Peridot was set free by Steven and subsequently evaded capture until she locked herself in this room. After moving to the Barn, which was later taken to space by Lapis Lazuli in "Raising the Barn", Peridot has moved back into the bathroom.
Under Steven's room, around the corner, reveals a typical bathroom. It holds many normal items, including a red sink, shower (with a red curtain and many yellow stars, similar to Steven's shirt), bathtub, mirror, toilet and a red rug. According to Peridot, the room has a citrus scent to it.
Following the house's renovations between "Change Your Mind" and the movie, the bathroom itself remains virtually unchanged. The side with the door, however, is slightly expanded, with the door itself now facing the right side of the house rather than the back.
Steven is shown brushing his teeth, waxing his ears, and shining his Gem in his bathroom. When Peridot is later cornered in the house, she locks herself in the bathroom. Over the course of Peridot's stay in the bathroom, Steven has been the only person allowed access inside to prepare for the day, or to simply go to the bathroom.
Peridot is shown to be still locked inside of the bathroom, and only runs out when she hears the loud crack of thunder, and when the other Gems are gone.
Steven uses the bathroom to take a shower after Connie and her mother left. He also changes his clothes from "The Zoo".
After Lapis flies off Earth and takes the barn with her, Steven lets an upset Peridot take refuge in his bathroom once again, only this time with Pumpkin.
After a few days of staying in his bathroom feeling depressed, Amethyst decides to take matters into her own hands and accompanied by Steven, convinces her to the Kindergarten.
Steven uses the bathroom before sleeping and saying goodnight to Peridot. She is seen sleeping in the bathtub, together with Pumpkin.
As Pearl sing her song "System/BOOT.pearl final(3).Info", the door of the bathroom can be seen many times.
Steven uses the bathtub to heal Cherry Quartz, who is immediately confused.
As Steven and the Crystals Gems become uncomfortable around the Rose Quartzes, they huddle in the bathroom.
Steven and the Crystal Gems huddle in the bathroom again, this time to talk about Bluebird Azurite.
The bathroom door can be seen as Steven and the Crystal Gems play Steven Tag.
Steven uses the bathtub to unshatter Jasper, which he succeeds in doing.
Jasper knocks the door open, revealing a scared Steven.
Steven holding Jasper’s shattered gemstone can be seen for a frame in his television.
In Steven's bathroom, there are various items and objects, such as the sink, shower, a plunger, a toilet, laundry basket full of Steven's dirty clothes, a rug, towels, Steven's toothbrush and toothpaste, a comb (which he never uses), a device that might reference a Gameboy, and some magazines.
- Peridot first described it as "some kind of archaic think chamber" and assumed that everything was a weapon.