"closed for many years "
The place has gone or never existed. A CoMaps user reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2025-07-13T12:01:25Z
POI name: Duas de Letra
POI types: wheelchair-no amenity-cafe cuisine-vegetarian
#CoMaps ios

"opvang voor dieren, oa varkens, schapen"
OSM snapshot date: 2025-09-13T21:01:41Z
POI name: Sanctuário
POI types: attraction-animal
#organicmaps android 2025.10.05-7-Google

"music playing guy with birds and elaborate setup. quite unique"
OSM snapshot date: 2025-06-22T05:04:15Z
POI has no name
POI types: psurface-paved_bad hwtag-lit highway-pedestrian-area
#CoMaps ios

In context of overlay "Places" – Arcádia (Cafe) – way/215182298 via StreetComplete 61.3:

Seems to be where "Livraria Fugueirinhas" is (a little further north)

Unable to answer "Are these opening hours still correct?" – Casa Bragança (Restaurant) – node/3210023820 via StreetComplete_ee 60.3:

It's a duplicate of the place across the street

"i went here to have a snack and verify it has closed"
The place has gone or never existed. A CoMaps user reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2025-06-22T05:04:15Z
POI name: Diplomata
POI types: cuisine-american amenity-cafe cuisine-diner cuisine-pancake
#CoMaps ios