Despite the mixed reviews, I quite enjoyed this film. It showed Amy Winehouse at different stages of her life. The acting (particularly by the main character) was quite good even if the vocals did not match the real Amy Winehouse.
Some of it could have been better, such as the circumstances of her death and I did not think that the relationship with her father was fully explored. I am not sure how accurate the film was but there is always scope for artistic licence.
Overall, it was a good watch.