You will start by standing inside a home theatre. Turn to your right and exit this room. Now in front of you there is a hallway slightly to the right. Make your way towards that hallway. On your right side there will be an open doorway towards the kitchen. Take a step forward and stand in front of the 5 paintings on your right. Exactly across from those paintings there will be an open doorway to your left. Walk inside this room. It is a powder room and you are done.