In context of overlay "Buildings" – Public Building – osm.org/way/923471641 via StreetComplete 58.2:

Old bus station (I think?).
Building no longer exists.

New house here.

via StreetComplete 56.1

Attached photo(s):
https://westnordost.de/p/197489.jpg

Unable to answer "What’s the surface here?" for osm.org/way/703014808 via StreetComplete 53.2:

Plastic : it's a floating pontoon

Unable to answer "Is there tactile paving at the top and bottom of these steps?" for osm.org/way/703014807 via StreetComplete 53.2:

Ramp, not steps

Unable to answer "Is there an air compressor available here?" – Gas Station – osm.org/way/337443121 via StreetComplete 57.2:

Duplicate - there is a compressor next to the building.

Unable to answer "What’s the surface here?" – Path – osm.org/way/1032970883 via StreetComplete 57.0:

Private land, no access or visibility

In context of overlay "Buildings" – osm.org/way/920234284 via StreetComplete 57.3:

Summerhouse type affair. Not sure how best to classify.

Attached photo(s):
https://westnordost.de/p/209570.jpg

Road narrows to a footpath between this point and just this side of house Braehead (last house on this road to the north-west)

via StreetComplete 58.0

In context of overlay "Buildings" – osm.org/way/1316930434 via StreetComplete 60.1:

No building here. Shape/size suggests that a couple of containers might have been here if mapping was done from satellite view.