Go through the grand room and take a right into the doorway that is immediately after the two Victorian east lake chairs.
Turn to the left and walk on the rug, going past a few chairs and a end table. When you get to the hallway, you can turn right and then go to where there is a door on the left and on the right. Stop there. Wait.
Turn around and walk towards the end of the hall. Take the last entrance on the right and stop between the two doors in the hallway.