The look of Loving Annabelle is very classic. The 35mm film looks glossy and the colors are crisp. The film LOOKS pretty. The story also has a classic 3-act structure and is very well-written. These traditional aspects are really interesting to note since the subject of the film is rather modern. The "unconventional" love story turns many notions on their heads: student-teacher sexual relations; the possible effects of a Catholic school upbringing or environment on an individual; and same-sex love, if anyone out there is still bigoted enough to take offense to that.
What I liked about the film was that it was character-driven, and not plot-driven. The emotional growth of the characters took center stage to the possibly sensational aspects. I felt carried along the storyline without any forced-ness or jumps in thought. The plot line was smooth, and had enough twists and turns to keep me from knowing what would happen next. I totally identified with the main characters and cared about them (individually) very deeply besides my interest in whether or not they would get together.
The look of the film, the quality of the story, and the TERRIFIC acting (both Annabelle and Simone are perfectly cast) give Loving Annabelle the depth and sheen of a much higher-budget film. (Though the emotional resonance of the story makes talking about budgets almost crass.) The music is also terrific. The soundtrack would be great to listen to as its own entity. This is the film that I've most enjoyed in a long time and have recommended it highly to anyone who will listen to me since I first saw it.