Judging from the 100 times my daughter listened to this, I would say it was quite interesting. Great format and length to get little ones interested in history. I looked for and downloaded other books in this "Who was..." series as a result.
I had never read this before, and was a little leery because I normally like fiction and didn't know if it would keep my interest. This was a very enjoyable listen, often funny, and often tear-jerking. Selma Blair does a great job of capturing the innocence, and insight, of the young Anne Frank. Even if you've read it before, give this one a listen!