Too many explicit scenes and not enough art!
I love Mexican art and history, but this film does a disservice to the legacy of Frida Kahlo and Diego Rivera by its explicit depiction of their many extramarital affairs. The film verges on the pornographic in several places and, as such, is not suitable for many people.
There are positive messages contained within, however, such as the belief that pain can lead to great art. Also, there are strong messages of body acceptance, such as when Diego repeatedly tells Frida that she is perfect, scars, maladies and all.
As an alternative to this film, I would recommend the PBS interactive website, "The Life and Times of Frida Kahlo."