Unable to answer "Is there tactile paving at the top and bottom of these steps?" – Beco do Castelo Branco (Steps) – https://osm.org/way/546708457 via StreetComplete 62.1:

These steps are behind a locked gate, and below is more waterway than footpath. The northern part is street, the southern part is not.

Attached photo(s):
https://streetcomplete.app/p/320988.jpg
https://streetcomplete.app/p/320989.jpg