I personally loved the book but I don't agree with some of the changes made in the movie adaptation. I don't like how they changed the way Natasha and Daniel met after 5 years. They were suppose to meet in a plane not at a coffee shop.
They also hid the fact that the lawyer did nothing to help. In the book he misses an appointment with the judge because he was having an affair with his secretary.
Daniel was supposed to have long hair tied in a man bun.
But overall it's good movie, they did a good job portraying the essence of the story. Could it be better? Yes , but it's fine.