Unable to answer "What kind of building is this?" for https://osm.org/way/103242255 via StreetComplete 48.0:

This is a free standing shed with a stairway leading to the Fluno Center Garage (Lot 83)

Attached photo(s):
https://westnordost.de/p/119714.jpg
https://westnordost.de/p/119715.jpg