"According to website https://piscoteket.no/ they closed in 2018"
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: 2021-10-22T11:45:14Z
POI name: Piscoteket
POI types: wheelchair-no amenity-restaurant
#organicmaps