Just remember: Never Go Anywhere Alone, Especially at Night. And if someone asks you, regardless if it’s a lie, tell them you are rooming with some other people who you are best friends with. It suggests that people will come looking if something happens. The worst thing to do is to let strangers know that it might take a while for people to notice you missing.
Also, avoid places where wars are going on unless you are studying warfare. It’s just simple logic. You can always learn what you need to know someplace safer than a country under attack from within or without.