I really enjoyed this film. It may be the best of the three films. The actors play their characters very well, and I think Mads Mikkelsen's portrayal of Grindelwald is excellent. Jude Law's portrayal of Dumbledore once again is impeccable, and superior to Michael Gambon and Richard Harris in the Harry Potter films, despite the difference in time period. Aberforth's portrayal too is excellent.
As with the Harry Potter films, the sets and special effects are amazing, however I do feel that Hogwarts in this film is more CGI than actual sets, as in the HP films.
The only negatives I found were the inclusion of Minerva McGonagall (as in the last film), which doesn't make sense with the information Jo Rowling previously provided about the character, and some other more important characters don't play a particularly significant role in the films (primarily Tina). Also, unsure about the way magic is used un the film, such as almost entirely non verbal spells and particularly with a number of spells showing a "green flash if light" which is typically associated with the killing curse, but apparently not causing immediate death in the film).
Despite these, I definitely recommend the film.