"Burned down for years ago"
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: 2023-02-27T13:03:31Z
POI name: Kjempeplassen
POI types: amenity-restaurant
#organicmaps

kawasan

There is boardwalk according one user of #Mapy.cz Please verify it.

way/220544581

Tag "name:"? Which language is meant?

Cluster as a whole is called "Langholmen" (despite consisting of multiple islands)

Is this a sea wall of some kind? Does it also serve as a walkable way?

Parkering

Aurdalen

Fillheia

Fillaunet