LET ME PREFACE THIS:
I love this atmosphere in the right mood....
This is a dive bar! Treat it as such. If you want to go somewhere where you just aren't sure what's gonna happen but it might end up being just one of the best nights you've had in a very long time (or you might be stabbed or arrested and deported), then go here! The money you save on drinks can go to the hospital bills or bail.
It really just depends but the bar staff seem friendly enough and it's so damn divey its almost like it's on purpose.