Ernest Calderon’s review published on Letterboxd :
A beautiful, raw, and surprising insight into parenthood, marriage, and getting older.
Charilze Theron is magnificent, taking up the bulk of the screentime as we follow her third pregnancy, and subsequent hiring of the titular night nanny, Tully (a strange, enigmatic, and alluring Mackenzie Davis).
There is a tactility to the messy house of the main family (cleaned literally and figuratively by Tully), but the true star of the film are the emotions and inner conflict of Theron. In countless films we see mothers being portrayed as superheroes, essentially able to balance caring for kids, a husband, and their own sanity. This film shows you a scenario in which the mother is incapable of that balance, and her journey, with the help of Tully, to find it.
This film isn't some cute comedy. Although there is some really effective humor (particularly with Tully's overconfidence in welcoming herself in the home), this story is tragic, stressful, exhausting, and depressing in all the ways motherhood can be. It's also quite beautiful and heartfelt.
This is one of those movies that allows you to truly empathize with a situation that you will never directly know (if you are male). It gets a little over the top sometimes with its movie moments, but in the end, it all pays off in a very satisfying and unexpected fashion.
Diablo Cody has written yet another emotional and entertaining success of a script, beautifully realized by Jason Reitman's unfiltered lens. Loved this film, highly recommend it.