Unable to answer "Who is allowed to park here? Parking may be free or paid." – Parking Lot – way/655617458 via StreetComplete 61.3:

I don't see any signs and it's basically a field so I assume it is open to the public. I just moved here though so I don't know, and could change if there is a game going on.

Attached photo(s):
https://streetcomplete.app/p/303528.jpg