From NetFlix:

Adrian LeDuc (Colin Firth) is a cash-strapped loner eking out a living running
a revival cinema in modern-day Buenos Aires. With interest in classic films waning,
he’s forced to rent out his insane mother’s room to a seemingly harmless stranger,
Jack Carney (Hart Bochner). They quickly become friends, but as Adrian displays
the same problems that plagued his mother, he also begins to suspect his roommate
is a killer. Is he right, or is he just plain mad?

NetFlix suggested “Apartment 0” to me. Since Colin Firth has been good in every one of his movies that I have seen, I gave it a try. Once again Colin Firth comes through well as a very disturbed person. I had not seen Hart Bochner before (or at least never noticed). He has an impressive resume in IMDB. However, I could not decide if his acting was acceptable. The setting is Argentina. Colin Firth speaks an impeccable British. But the American accent of Hart Bochner really grated on me and sounded cheap. Do we really sound that way ? Colin lives in an apartment building inhabited by a strange assortment: transvestites, etc. (If any one of you is a transvestite, my apology). This is one strange, possible flawed film. But its strangeness and the plot forced me to sit through to the really unexpected ending.