There are probably at least 300 SSIDs being broadcast in this area, plus Bluetooth and other noise.
This is a low-income joint, so amenities are comparatively minimal, but there's just no excuse for not forging a deal with one of the local ISPs and having their WiFi/Ethernet to blanket the property, convincing residents to shut their personal ones down in favor of a robust replacement. (I don't know how you do that, but the benefits are obvious.)
In fact, when I moved in, their marketing material blurbed "High-Speed Internet!" but it turned out they just meant that the wiring was present for us to hook it up.
There is already a WAP supplied by my own ISP directly below me, and I can easily, seamlessly move to using it instead of my in-home network, which is great during an electrical storm.