Facing the two chairs to the left and the stairway to the right, turn 180 degrees. You'll see two doorways in front of you, go through the right doorway and walk straight down this hallway, bypassing the partitions on the right and straight in front of you. Keep on past that partition, you'll see two sinks to your left. Stop before you reach the sinks on the left, to your right will be the tile wall and then also a brown door just to the right a little bit ahead of you, you're done.