Unable to answer "This shop has been vacant. What’s here now?" – house number 22: Building – https://osm.org/way/25619205 via StreetComplete 63.0:

F.R. Böhnen Fachbetrieb für Oldtimer (https://www.clinicforclassiccars.de/)

Attached photo(s):
https://streetcomplete.app/p/332146.jpg
https://streetcomplete.app/p/332147.jpg