Unlike the rest of the dungeon, the Hufflepuff Common Room has a warm, welcoming feel. Yellow decorations dangle from the walls and ceiling, while comfortable armchairs are scattered about the floor. To get to the Dormitories, students must go through underground tunnels with perfectly round doors at either end.

This is an oval-shaped classroom cramped with work tables where students practice mixing potions. It is dimly lit, and mostly unadorned, creating a rather unwelcoming atmosphere. Cauldrons and all other necessary tools are stored in a room beneath the classroom, connected by a trap door.