Unfortunately I've had a similar experience at NBC on at least three occasions. One time we were on the ground floor- same thing patio door lock broken, only we had no stick just the chain which was long enough to allow a hand into the door and pull of the chain. My friend saw the hand reach in while "sitting in a compromising position in the bathroom", has this not been the case the guy would lost his hand. He yelled and scared him off so we knew we had to keep a stick in the door as well. We also did not use our patio at the last stay a month ago so we kept the stick in the door and the curtains drawn, one morning early in our stay after maid service had been through the stick was pulled out of the door, none of us did it because we did not use the door we in fact had pushed the two tub chairs so close to it you'd have had to move the chairs to move the stick and then move them back. Other tourists have had their 3rd floor room robbed when robber apparently scaled the balonys and came in through open patio door. This was a story I heard more than once over the years.