Unable to answer "What kind of building is this?" for osm.org/way/363305196 via StreetComplete 51.0:

It's used by youth organisations

Unable to answer "What’s the house number of this building?" for osm.org/way/431509640 via StreetComplete 53.3:

Part of a house

Attached photo(s):
https://westnordost.de/p/164053.jpg