waldyrious
Unable to answer "What surface do these steps have here?" for https://osm.org/way/825533543 via StreetComplete 32.1:

The surface of thes steps is some sort of square paving stone with rough finish

Attached photo(s):
https://westnordost.de/p/44736.jpg
https://westnordost.de/p/44737.jpg
https://westnordost.de/p/44738.jpg