Unable to answer "Who is allowed to park here? Parking may be free or paid." – Parking Lot – https://osm.org/way/1425776146 via StreetComplete 63.1:

Glaube nur die autobücherei darf hier parken, nicht alle die zur autobücherei wollen

Attached photo(s):
https://streetcomplete.app/p/347390.jpg