Down the Wrong Alley
I'm currently reading the second script of the week that relies fairly heavily on recurring scenes taking place in Manhattan alleys.
What many writers don't realize is this -- there really aren't any alleys in Manhattan. Certainly not in the midtown area.
And anything remotely resembling an alley (like a space behind a building where there are dumpsters and such) is inevitably fenced off.
Just a recurring thing that, as a guy who lived in Manhattan for a decade, routinely makes me roll my eyes.
One of the scripts even had a scene that takes place in a phone booth. There haven't been phone booths in Manhattan in a long, long time.
I won't go as far to say that you should actually visit the city that you are setting your script in. But it certainly helps....