Unable to answer "Who is allowed to park here? Parking may be free or paid." – Parking Lot – https://osm.org/way/1054805182 via StreetComplete 62.1:

It seems like it's reserved for E-Scooters...

Attached photo(s):
https://streetcomplete.app/p/322357.jpg
https://streetcomplete.app/p/322358.jpg