Go straight until you pass a chair on the right then turn left. Walk past the metal wall and then turn left. Wait near the sink.
With the door to the outside directly behind you, move forward and turn left. Continue around to your left with the metallic, cylindrical wall to your immediate left until you reach the entrance to the restroom.
Turn around 180 degrees to go further into the building. Keep heading to the left until you find yourself behind a large, curved metal screen near a small table and a window.