Listening to the book I found it to be quite musical. Whenever the author took a moment to describe an environment, she often had a rhythm pattern of 3's. The actor seemed to pick up on this too as he read...it was surprising that a book had a sense of music to it.
Also, the writing and detail was so good. Much of the book takes place in NYC, and her accuracy in describing streets, neighborhoods, doormen was spot on. I kept thinking I would walk by the Met and see a part of her story (not going to spoil it).
The book is good because of her descriptions and also the imaginative nature of the plot and the relationships she creates. Warning, it is a tragedy, until the end where she does try to end on a less than tragic note...so if you are not in the mood for that, I would skip it.
Second warning: it's REALLY long.