"There is no pedestrian path here, just a cultivated field."
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2024-07-23T19:32:09Z
POI has no name
POI types: highway-path
#organicmaps android

"One side is open (the wall is only on three sides)"
OSM snapshot date: 2024-08-10T16:22:45Z
POI has no name
POI types: amenity-shelter
#organicmaps android

"there is a free bathroom inside"
OSM snapshot date: 2024-07-23T19:32:09Z
POI name: Ekebergparken
POI types: building fee-no tourism-museum
#organicmaps android