I only saw it once in the theater, so I need to see it again - but from what I can remember, I really liked it! I left the theater thinking that it was one of the best Christmas Carol adaptations I had ever seen, :-D. As is usually the case, it wasn't always historically accurate - but they were trying to tell a story, and they certainly succeeded at that. I love Dan Stevens as Dickens, and I love the idea of his characters pestering him as he tries to write. I have friends who are writers and they assure me that those scenes are a pretty accurate way of illustrating what it's like for an author as he wrestles with his characters.
For me one of the most moving scenes (spoilers for those who haven't seen it) is the flashback when Dickens' dad is taken to prison - all the family is in the cart being taken away while Dickens is left standing there crying. My wife asked me if that's how it actually happened, and I said probably not, but I thought it does accurately show what he felt like when his father was arrested. It's so good! There were lots of moments like that in the movie - moments that helped illustrate what was going on in his life and how he felt about certain things in his life. Now that I think about it, I could probably write a lot about that movie, LOL! And now I want to see it again.