You're facing a wall, turnaround, go straight, on your right you can see a round table, keep going straight, you will find a small passage, go near that. You will find staircase on your left,, get down the staircase. Now, You can see a brown open door. Enter the room through the door, you can see number of washbasins near you. Go straight , Go straight and you will find a circular staircase, go near that staircase. In front of you, you can see a small bathtub. It is your destination.