Hello, thank you for editing. For the "s/n" in addr:housenumber, we have the tag "nohousenumber"="yes". You can find more information at:
https://wiki.openstreetmap.org/wiki/ES:Key:nohousenumber
and
https://community.openstreetmap.org/t/nohousenumber-yes-en-espana/99343.

Modified it: https://www.openstreetmap.org/node/4829713036/history

Regards.