This was such an awesome book with a great storyline, I loved it! I have always been interested in Genies/Djinn/Jinn and making wishes and stuff and I'm even thinking about writing a novel with genies but anyhow, this book was exactly how I expected it to turn out (they both fall in love with each other and get together in the end) but it has lots of surprising twists that I totally did not see coming and made the whole reading experience even better for me. 
 I liked the switching POVs between Viola and Jinn, it was nice to read Jinn's side of the story whenever Viola got to be annoying and insufferable to keep on reading. It got to the point where her childish antics became annoying and she turned into an ungrateful and selfish girl who became angry when her best friend, Lawrence, couldn't even be happy for her after she made her first (accidental) wish. She redeemed herself when she realized that her selfish wish hurt someone else. Then Viola used up her 2nd wish to make things right for Ollie. She became an even better person after that and I enjoyed reading her side of the story again. It was nice to see her enjoying hanging out with Jinn and how much they learned to care for each other, especially Jinn who started to feel. 
 Near the end, when Viola was forced "pressed" to make her last wish that would make Jinn disappear, I sort of hated the fact that Viola was going to forget about him, and when it happened, Lawrence was the only one who knew who he was. It was hell for Jinn back in his world, Caliban, because he knew that if he was earthbound, he would go visit her and be in pain because she wouldn't know him and Jinn would have to watch her as she grew older and never remember. But after his trial, (view spoiler)[and him being forced to become an ifrit (hide spoiler)] it all works out, months later, and they end up living happily ever after. Or so one assumes seeing as how that ending was open to interpretation. 
 Personally, I wouldn't mind reading a 2nd book about them. A sequel would be much appreciated, although there's a novella written about Lawrence, I would still like to see more of Viola and Jinn in the future.