Why was it locked
It is sad and unfortunate that the thread on Lagos was locked. I am sure that any creepy person in Lagos can figure out the crew hotel. A UK firm is recruiting US f/a's for flights JFK-LOS and their briefing sheet clearly states the hotel and the fact that BA, AF stay there!
US f/a's have security training but given that this is Nigeria we are talking about, as Americans, this is an entriely different kind of security. I think the poster only wanted to know HOW safe your airline makes it.