The words are carefully written so that you can read it in a 2/4 rhythm, the story begins with the following lines:
There is a house
a napping house,
where everyone is sleeping.
I'd say it's a great story for kindergarten kids. Though I'm using this book in my Year 2 music class as source for class performance.
I wish I could find a cartoon made to this story, but there isn't, the video below is the book read aloud: