hufflepuff common room

Accessed through a still life painting found near the kitchens; to reach it, you enter a door to the right of the main staircase in the Entrance Hall and down a staircase there. Although technically it is at dungeon level, the common room is as far from it as possible. There are lots of yellow hangings and comfortable armchairs. There are "little underground tunnels leading to the dormitories, all of which have perfectly round doors, like barrel tops".