These rooms are decorated in two days. It's all kept secret. The neighbors spend the night in each other's home. They don't see their finished room until the end of the second day. They have no say what happens in their own home.
It's the opposite journey from what I've usually done with films. I find it very easy to go from, say, a lit, pleasurable environment, like what you see outside there, to a very dark place. But the opposite journey, which is what this movie takes, is much more complicated.

