Unable to answer "What are the opening hours here?" – Vintage mit Köpfchen (Antique Shop) – https://osm.org/node/4369941105 via StreetComplete 63.0:

The following Text is present (what is meant by "14-tägig"?)

Mo - Fr 14 - 20 Uhr
Di u. Sa 14-tägig 14-20 Uhr