Unable to answer "What kind of building is this?" for https://osm.org/way/139666621 via StreetComplete 19.1:

from entry by lisainstrasse, it is a single house number 11. on top, there are the multiple Appartment house with entry from Lameystr 35a.

Attached photo(s):
https://westnordost.de/p/13708.jpg
https://westnordost.de/p/13709.jpg
https://westnordost.de/p/13710.jpg