Unable to answer "Is this still here?" – Restroom – https://osm.org/node/6273304832 via StreetComplete 62.0:

This restroom is only for transit employees and not open to public (it's locked). Not sure if there's a special tag for that as it's likely to cause confusion as generally restrooms are open to public.

Attached photo(s):
https://streetcomplete.app/p/318581.jpg