You are facing towards the wall, and there is a closed glass door beside the wall. Turn around walk towards the grey chair, move towards the steps, and you can see an open door, now exit the bed room. Now move forward, and climb the steps in-front of you, climb the steps, and move forward again. Turn slight left, you can see few steps, and the stairs opposite to you, move towards it. You are now standing in-front the railing of the stairs, which is your final destination.