You're currently staring a circular corner. Turn slightly to the left, and take two steps forward towards the room, with the spiral staircase and the silver cushion. Once you're in this room, standing next to the silver cushion on your left, take a step forward. Now, walk up the silver staircase to your left. Once you're at the top of the silver staircase, take a step forward towards the end of the brown wall to your right. Now, turn a hundred-and-eighty degrees, and take a step forward to your last point. Now, once you're standing right on top of the silver staircase, you're done,