You begin facing a staircase, take a step onto the staircase, take a step towards the main staircase inside the house, go up that staircase, you will pass another staircase on your left, ignore it, keep going straight, go down the hallway, and then take a step into the room on the left at the very end of the hallway and take the last step towards the foot of the bed in front of you, you are done.