Unable to answer "What’s the surface here?" for https://osm.org/way/1208597233 via StreetComplete 54.0:

No public entrance here. Behind the door small hall and a cold Room ...

Attached photo(s):
https://westnordost.de/p/175579.jpg
https://westnordost.de/p/175580.jpg
https://westnordost.de/p/175581.jpg