Unable to answer "Are these opening hours still correct?" – on level 0: Flawless Hairdesign (Hairdresser) – https://osm.org/node/10956767927 via StreetComplete 58.2:

Öffnungszeiten Mo-Fr 10:00-18:80

Attached photo(s):
https://westnordost.de/p/234178.jpg