I listened to the audiobook and the voice actor is doing an amazing job. It's an interesting concept, I found the book quite tense and was thrilled to see what happens next. May have enjoyed it more if I weren't an European and got all the little things I'm sure New Yorkers know but I had to just believe in.
Edit:
It's 4 am and I am thinking about the book again so I will upgrade the rating I guess.

It always takes me a few chapters to get settled in for a Jemisin book. She just drops you into the fantasy world completely from the very first sentence you read, and good luck figuring it out; which you always do, because she’s just that good at worldbuilding. But it takes a while to *get* it, which is why I often have to go back and re-read the beginning of the book knowing what I know after having interiorized it. The City We Became was no different in that regard, but ho boy wasn’t it a ride. And I loved it.

I mean, a proud Black female writer, with her unapologetically queer protagonists of colour, doing the things that this book does with Lovecraftian motifs and horror — all the while referencing Lovecraft as the ridiculous bigot he was? You just know Lovecraft would’ve hated it, and that just makes it so much better. The hard truths about living as a queer person of colour in America are never concealed, and in fact quite openly protested; the fact that bigotry and hatred are tendrils of the Enemy won’t be lost on anyone. And the intricate lore built around the cities is simply a treat to read. I really wish I could understand all the references to New York history and culture better, since I’ve never been and truthfully know rather little — but that’s not even a problem. I enjoyed myself deeply regardless.

I was actually hoping for a standalone this time, but it’s a trilogy again — and hey, you won’t catch me complaining.

There are aspects of this I really love but overall I feel like it tries to do too much- worth a read if you love NYC, though. Loses some points from me for sound effects and music in the audiobook- but if you’re in to that I suppose it’s well done.

One part 'Everyone in New York hates each other! And traffic!'
Two parts 'New York is just the best!' 
And one part 'Are you sure you noticed the racism? Let me repeat it again over an extra 10 pages just to be sure. And then apply every racial stereotype to the other characters so you're aware they're not white.'

With a couple of ageist and fatphobic comments to round it all out. 

Also the twist at the end? Absolutely predictable.

Seriously we're introduced to Veneza with about a million references to the fact she lives in Jersey which 'isn't part of New York reeeeeally, but kinda is at heart' and then she just happens to be the only non-city who hangs around?