This is a typical Geronimo Stilton adventure, and all I can think is that the earlier reviewer must not have read any other books in the series.
It's full of the usual jokes at Geronimo's expense and the amusing asides. It has the usual tidbits of factual information should your child be interested. And of course, it has the usual fun typesetting and colourful fonts that help to hold interest.
My son loves Geronimo Stilton. He loves the humour and silliness, and he loves the fact that Geronimo is always on the receiving end of the jokes.
This book easily held his interest, had him chuckling, and he may have even learned something.