I didn't know, before watching the movie, that I am watching a monodrama. That would change my expectations from the movie, but the ways I saw it, it was too long and exhausting. Just a minor spoiler: the movie starts with a 5-minute sequence of a man walking through dark rooms and nothing happens. That might set the tone of suspense for some viewers, but one minute would be just fine.

I couldn't really relate with the emotions of the main characters but i knew that his inner struggles would all go away if he just went to sleep. He would feel better in the morning. Finally, when the movie starts giving us another perspective, it all becomes more "entertaining" and somehow confusing. So at the end, I compliment the main actor for holding the entire movie on himself and offering us an interesting psychological study of the protagonist, but I can not recommend the movie to the general audience.