Judit Pogany actually hates the mignon cake. Yet she ate five of them during the shooting. She also never wears black clothes and dislikes corny music.
Both the girl's apartment and the old ladie's room is in the same apartment. The two rooms open up from each other. This was a last minute decision as it was extremely hard to find suitable apartment from ultra low budget.
Originally the music that can be heard from the radio was meant to be one of the main Hungarian hit singles from the '60 but the producers couldn't obtain the rights due to a very high demand from a lawyer. Eventually they had to make a composer come up with an original score.