"Cooridnates currently seems slightly off."
OSM snapshot date: 2024-09-04T00:27:27Z
POI name: Boysclub 21
POI types: amenity-brothel
#organicmaps android

"I am pretty sure this should NOT be a Sports Center, but I cannot find a suitable category on Organic Maps"
OSM snapshot date: 2024-10-01T00:16:33Z
POI name: Volleybalveld
POI types: leisure-sports_centre
#organicmaps android

"Was this from before 2023 construction works at Science Park? I am there now, and do not see it"
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: 2024-10-01T00:16:33Z
POI has no name
POI types: building
#organicmaps android