The premise was very creative. It was neat to see characters from so many different plays interacting with each other. But the book was missing something. It was just a little too dull. The mystery wasn't very compelling, the characters (love interests particularly) were lacking something. I did enjoy the book...but more because I liked the idea of it than because I actually liked the book itself. 
 Also, after years of re-watching my old Little Mermaid VHS, (and having never read The Tempest)I don't think I'll ever be able to get used to the name "Ariel" for a man :P