Amazing book! I recommend you to read it. It's captivating enough, but in some chapters it focuses too much on analyzing irrelevant things like landscapes and food, which is unnecessary and tires the reader. (4 stars only for this reason)
But what shocks you is that it's a true story and it shocks you how there are such true stories with so much emotion and people with so much dedication to love for a person. I believe that the book is better than the series.