Unable to answer "What’s the house number of this building?" for way/558560851 via StreetComplete 53.3:

These are multiple different buildings, not just one.

Unable to answer "What type of bicycle rental is this?" – Bicycle Rental – node/4751569534 via StreetComplete 58.1:

Not sure but don't think it exists

Unable to answer "What surface does this piece of road have?" for way/618947848 via StreetComplete 53.3:

I feel this is ambiguous: what part of the road is being described?

Unable to answer "Which direction leads upwards for these steps?" for way/96896584 via StreetComplete 53.3:

Both ways

Attached photo(s):
https://westnordost.de/p/168021.jpg

Unable to answer "Is this still here?" for node/4692271431 via StreetComplete 53.3:

Don't think it exists anymore

This isn't nr 8

via StreetComplete 53.3

Unable to answer "What are the opening hours here?" for way/272018986 via StreetComplete 53.3:

I believe it closed. Gates closed with no indication of what is or was here.

Unable to answer "How is drinking water provided here?" for node/11107973633 via StreetComplete 53.3:

It's a three-in-one water fountain: a water bowl for dogs, a bottle filler and a third one to drink from directly

Unable to answer "How is drinking water provided here?" for node/10812602939 via StreetComplete 53.3:

It's not just for filling water, nor just for drinking (there's also a bowl for pets to drink water). But I don't want to select (other) because it's very vague

Attached photo(s):
https://westnordost.de/p/168011.jpg

Unable to answer "What kind of building is this?" for relation/9426930 via StreetComplete 53.3:

It's an open space + tables and chairs for a nearby bar. Not really a building...?