Right now you're on the staircase facing the wall. Now slightly turn right and get down few steps and turn behind. You can see an entrance in front of you, move towards the entrance and turn right. Now move forward towards the billiard table and turn right. You can see an open entrance in front of you, move towards the entrance and slightly turn right, you can see a sink in front of you, move towards the sink and stand in front of the sink and it will be your end point.