I got about 2 hours of sleep. I was frightened by the signal honks and the neighbor downstairs banging around, and then I was awakened by the neighbor upstairs stamping.

Since I didn't specify the one upstairs as also being part of it, I doubt the landlord spoke to her on Saturday, so she's keeping the stamping up. Fortunately my recording app picks up the stamping so I can keep getting recordings to establish a pattern.

She was not stamping before the initial night of stamping and pounding on January 2nd/3rd.