Definitely good, though only thanks to Marion Cotillard's excellent performance.
The premise is intriguing and features some emotional scenes, there's one with Timur (Timur Magomedgadzhiev) that particularly hit me in the feels out of nowhere; it's not even the most gut-wrenching part of the film, yet it made me feel something the most.
The camera work et al. isn't all that great, the dialogue is especially underwhelming. Perhaps I was noticing it more due to viewing with subtitles, but there's a lot of moments where we see Sandra (Cotillard) retrace the same steps with each individual -... read the rest.