You are facing an open door.  You are going to step out into the hallway and make a left.  You are going to enter the first room on your right.  You are going to walk across this large open room and exit the door.  You are then going to make a left and you are going to enter the first door on your right.  You will see 2 black chairs.  And once you take one step into this room right next to the door that says 345 you are done.