According to mapy.cz user lookout has been dismantled and is no longer available.

"wurde scheinbar abgebaut"
The place has gone or never existed. This is an auto-generated note from MAPS.ME application: a user reports a POI that is visible on a map (which can be outdated), but cannot be found on the ground.
POI name: Aussichtspunkt Talsperre Bautzen
POI types: building wheelchair-limited tourism-viewpoint
OSM data version: 2018-01-26T12:04:02Z
#mapsme

Standort ist burglehn 13