The Prefects' Bathroom is an internal location within Hogwarts School of Witchcraft and Wizardry that the player can visit in Harry Potter: Hogwarts Mystery. It is a special bathroom on the West Towers.
Description[]
The Prefect's Bathroom is to the left of a statue of Boris the Bewildered in the West Towers. It has a portrait of a mermaid on the wall.
During the Main Character's fourth year, new Prefect Charlie Weasley got access to this bathroom and was given a tour of it by his older brother and fellow Prefect, Bill Weasley. If the Main Character completed the Prefect Achievement, they are also on this tour. Later in the year, the Main Character enters this bathroom with Charlie and Bill in order to talk the ghost Duncan Ashe to find out more about Jacob's time at Hogwarts. The Main Character once again visits this bathroom to get the Vault Portrait from Peeves.