In context of overlay "Surfaces" – Foot Path – osm.org/way/1320110847 via StreetComplete 60.3:

Asphalt, aber ziemlich kaputt durch Wurzeln und dadurch Risse und starke Verwerfungen.

Hausnummern für dieses Gebäude alleine
9, 11, 13
9 im Süden, 11 Mitte, 13 Norden (zur Straße östlich davon)

via StreetComplete 60.1

No parking space anymore. A building is in construction on this area.

#OsmAnd

Unable to answer "Which direction leads upwards for these steps?" for osm.org/way/678890006 via StreetComplete 53.3:

There is no other stairs

Attached photo(s):
https://westnordost.de/p/169684.jpg

The massive fence is all around that area as it is surrounding a parking space for construction machines; at this particular point there is no chance to get through even as pedestrian.
Was there with the bicycle without Smartphone to take a picture, but as you can see from other services satellite pictures, there is at least no continuous street.

Hydrant

via StreetComplete 54.0

Attached photo(s):
https://westnordost.de/p/174860.jpg

Unable to answer "What sport is played here?" for osm.org/way/1127832740 via StreetComplete 53.3:

StreetComplete erlaubt mir leider nicht das Hochladen von Bildern aus der Galerie.
Auf dem Schild steht "Sommer-Stockbahn", dies ist Stockschießen (ähnlich Curling, ohne auf Eis angewiesen zu sein).
Zwei Probleme also:
1) Stockschießen != Curling
2) Ich konnte weder das eine, noch das andere in OSM finden.

Zaun durchgängig - auch zu Fuß kein Durchkommen

This path is gravel, from the bridge on south down to the train station.

via StreetComplete 53.1

Hydrant.

via StreetComplete 53.1

Attached photo(s):
https://westnordost.de/p/156473.jpg