You are standing near the stairs, facing towards the wall with portraits on it, turn left and get down the stairs completely till you reach the bottom, you are now standing in front of an open door, move forward and enter the room, keep moving towards the wall, which is in front of you. Now turn right, you can see a closed door, which is in front of you, move forward here you can find two open entrances on your left, turn left and enter into the first open door, move forward in between the bed and the wooden cabinet. Turn slight right and move towards the open door, you are now standing at the entrance of the bathroom, facing towards the white curtain, which is your end point.