Right now you are facing towards a pillar, turn slightly towards right and go forward, by crossing the piano. Turn slightly towards right, you will find an open arch, move forwards towards it and enter the room. Turn slightly towards left and go forward in the narrow path by crossing a mirror to your left. Enter the room, at this point you have reached the gym room. Turn slightly towards right, you will find an open door, enter the room through it. Here you are in the bathroom, go a little further near the curtain. Here you have reached your destination.