You're facing towards the closed brown door, now slightly turn to your left, you can see an open door, exit the open door and then turn to your left, you can see a dining table, pass through the dining table, you can see an open door, exit the open door, you can see stairs, climb the stairs and after climbing half of the stairs, you can see stairs both the sides, you have to climb left stairs, middle of the stairs is your end point.