Let me preface by saying I've personally never read the books. However, I am a HUGE fan of historical romance dramas and have seen probably all of the other movies/shows that are even remotely similar to this.
I personally think Dakota Johnson is wonderful in this film. I can't truly compare her to the Anne Elliot in the books, but I think in this film she portrays a very tender character that makes you just fall in love with her. The way she speaks, the tone of her voice, her gaze, it's all honestly so wonderful. I had never seen her in anything else other than Fifty Shades of Grey and I didn't like her much there, but this completely changed my mind about her. I love her portrayal of this character.
HOWEVER. The chemistry between her and Joris could not be any more lacking. It was awful to watch because I wanted so badly I feel their love story but instead I wanted to fast forward their scenes together because I just wasn't feeling anything. I don't think this is Dakota Johnson's fault though, and more on account of Joris. I found his portrayal of the character to be very very lackluster, to say the least. Which is such a disappointment.
I don't have much to say about the other characters but I do love seeing Henry Golding in films. He is absolutely so handsome and a fantastic actor as well. He is so incredible charming, and plays his devious manipulative character absolutely perfect. Hands down the best actor in this film.