What is the author's style in City of the Beasts by Isabel Allende?

The story is written in an informal style with an emphasis on providing information about Alex, the setting, and the culture of the people of the Amazon. The informal style makes the book it easy to read and easy to understand. The casual reader may become bored with some aspects of the story. For example there is extensive description about Alex's trip under the surface of the earth as he searches for the magic quarters he believes will cure his mother.