CIAO!
As a bookaholic, I don't think there is something called a perfect book. BUT in the hopes to find one someday I tend to go deeper to find answers to the questions that can make a book an ultimate read.

Whether the books are on wattpad or are bestsellers from around the world, a story will always be a story, appealing different audiences, incorporating distinctive ideas, and eventually producing a piece of art, igniting emotions and thoughtfulness.

And it is not just the writer but the reader, together they give birth to a new generation of notions, conceptualizing new worlds together. 
Lets lose ourselves in books and find ourselves there too.
~V.A