Unable to answer "Are these opening hours still correct?" – Weststadt Reisebüro (Travel Agency) – https://osm.org/node/9448360876 via StreetComplete 59.2:

die Reisewerkstatt
UND
die Ballonwerkstatt

Attached photo(s):
https://westnordost.de/p/247561.jpg
https://westnordost.de/p/247562.jpg