I've heard nothing but good things about this book, and it absolutely deserves the hype! I love dual perspectives and while I loved Nahri's perspective, I didn't enjoy Ali's. Nahri has a really interesting storyline but it felt like Ali wasn't the main character of his own POV. 
I also felt that the romance was unnecessary and even though this is adult it felt like YA - maybe because of some of the tropes used. But overall I did enjoy it and I can't wait to read Kingdom of Copper