You're now facing the round table. Turn slightly right and walk towards the piano. Walk straight and enter the middle vault. Walk straight till the midway and turn slightly left. Now walk towards the left side vault and then take left. Now move forward and take first left. You will now find a table with multiple chairs. From there, turn right and walk straight, you will see a black colour chairs. Go near the chairs, stand before the chairs facing the fire place, you will reach your destination.