Ah... this brings back memories. A few years ago I wrote this article https://funnybretzel.com/datamining-a-flat-in-munich/ when I was searching a flat in Munich. Some time has passed since then and meanwhile I've enhanced the process quite a lot, just like OP I'm currently searching for a place (a house) and I'm using quite the little bot farm to massively automate things. I'll post the results if it converges to something useful. Meanwhile, all the luck to OP and excellent write-up! :)