Nine trouble-making rats have been painted in black-and-white on the walls and furniture.
One rat appears to be peeing into the toilet, while another swings from a ring-shaped towel holder, plopping into a tube of toothpaste and squeezing it over a nearby wall.
Two of rats appear up on the shelves, scurrying amongst Banksy's toiletries. One scrambles over a roll of toilet paper, causing it to unravel down towards the floor, while the other is about to squirt hand sanitiser all over the room.
A trio of rats seems to be wobbling a vanity mirror above the sink, which is slanted against the wall as if it could fall off at any moment. In its reflection you can see a rat that has been drawn on the opposite side of the bathroom, making tally marks on the wall with red lipstick.
In the bottom corner there is also an arched mouse hole, from where it seems all the creatures have emerged.
Banksy typically produces public-facing artworks on a much larger scale.
Just last year the artist erected an installation in the style of a pop-up shop – he used the space to sell branded merchandise, after a greeting-card company threatened to "seize legal custody" of his name.
Back in 2017, the artist created an art-filled hotel in Bethlehem, which sat just five metres from the wall that separates Israel from the Palestinian West Bank. He also painted a Brexit-themed mural against a four-storey building in Dover, which depicted a worker chipping away a star on the European flag.
Source: Natasha Levy