Hello,

I had a look at this edit.

From what I see, most houses here have two floors + one from the roof:
https://www.mapillary.com/app/?pKey=794311514909889

In OSM, we tag the situation like this: building:levels=2 + roof:levels=1, and not building:levels=3.

Can I suggest you read the documentation again; maybe you did not know about this page.
https://wiki.openstreetmap.org/wiki/Key:roof:levels

Thanks for the better changeset titles, by the way!