Unable to answer "Who is allowed to park here? Parking may be free or paid." for https://osm.org/way/364220789 via StreetComplete 44.1:

Parking lot is fenced off and partially used by the business East of the lot. South and North entrances to parking lot are blocked off.

Attached photo(s):
https://westnordost.de/p/99971.jpg
https://westnordost.de/p/99972.jpg