Kola77
Unable to answer "What is the house number of this building?" for https://osm.org/relation/1308265 via StreetComplete 33.1:

building belongs to two different streets. Hörsalstorget & biblioteksgränd. has house numbers 2,4,6 and should have 8 on the biblioteksgränd side. 4,6 on hörsalstorget.