What are they seeing that makes them say no.
Gang members, Gang Graffiti (vs tagging), shoes hanging from the power lines, a lot rain ruined flower and candle memorials with weathered photo's of those mowed down in street battles?
Or is it your place, is it just to downscale for the rent you are asking for it.
What if the rent was $250 a month--would they still flee the area, or would they sign on the dotted like.
If it's not price or product, then maybe you are attracting the wrong prospects to the place.
People who eat too high on the hog---birds of a feather--sort of thing.
As a New England financial consultant I'm assuming you are pretty far removed from the possible renters in this area.
If the area is really tough, can you read gang graffiti and discern it from tagging? Do you know why they might have thrown a good pair of sports shoes up on a power line---things like that.
Just my 2 Cents.
Know your demographic....understand what they want, and what they don't want..