Mr. DuLac’s review published on Letterboxd :
Even if you didn't know this was based on a stage play before, you would deduce it while watching the film. One set and an abundance of dialogue. Probably not for everyone. The key to this one though is that you have four actors that can pull it off. I especially enjoyed it because of Kate Winslet and Christoph Waltz. Pretty much every single thing Waltz did in the movie I enjoyed.