You begin in a washroom, exit the washroom, go towards the banister on the left and then turn to your left, you will see another staircase going up and underneath that staircase there is a doorway, go towards that doorway, go into the bedroom, take another step forward and then turn to your left, go through the doorway that's next to the bathtub, and just stand facing the corner where the window and the shower curtain meet, you are done.