Go down the hall on the left and into the next room on the right. Go to the bottom of the staircase.
Take a left, and leave the library. Walk straight, and take the last right. Go up the stairs, and stop on the third stair.
Enter the doorway to your left. Walk straight down the hallway and turn right when you reach the double doors. At the door leading outside turn around and walk up 3 stairs and stop.