Unable to answer "What’s the house number of this building?" – Apartment Building – https://osm.org/way/135808645 via StreetComplete 59.2:

zwei eingänge 62c,d

Attached photo(s):
https://westnordost.de/p/247948.jpg
https://westnordost.de/p/247949.jpg
https://westnordost.de/p/247950.jpg