During end credits, it can be read "2021. Stage 4, Moonrise Studios" This gag was said by director Carlos Loaeza in production and then also added in credits even though the entire series were filmed at his department. Loaeza claims that Stage 3 is where Frames (2020) is filmed (producer Esther Briones department) and Stages 1 and 2 were lost in a fire.
Despite none of the character is Jewish, there's a menorah on the desk.
From episodes 1 to 3, there's on the desk a purple post-it on which is written: "Plan de rodaje eps. 3 - 4" (Spanish for Shooting List).