Though in the last five years it's gotten kind of pricey in the downtown area I keep discovering clusters of artists out in the neighborhoods in my travels in the city.
https://i-d.vice.com/en_us/article/new-york-i-love-you-but-i...
Buildings are really cheap though you've got to restore them yourself. Tax valuations though are set at pre-recession values. But if you get a lawyer they can be lowered sometimes up to 75%.
I'm starting to see others following the clusters of artists and slowly these neighborhoods are in the beginning stages of gentrification.