Unable to answer "What are the opening hours here?" for https://osm.org/node/8595346908 via StreetComplete 53.2:

So this looks like it was a cycle shop back in the day. On the window it says "LOPPIS" (on handwritten paper) which means it's a sort of flea market. No sign as to who owns this or if it's open. Perhaps it's vacant and the owners are looking to repurpose it?

Attached photo(s):
https://westnordost.de/p/161040.jpg
https://westnordost.de/p/161041.jpg