The People Upstairs is a great Spanish comedy. Now they don't make much conversational cinema. After all, what is easier to show in the frame as not a conversation of 2 people. But in this and the uniqueness of the genre - you need to shoot all this at an excellent level in order to keep the viewer at the screen. And the dialogues here are great. Shot of course easier than Carnage from Polanski, but on the same level as the Italian Perfect Strangers.