Our favorite restaurant experience in Lisbon was at Travessa da Espera 34, a two block walk from our apartment. As you approach the entry to Primavera do Jeronimo, this is what you see.
If you understand that graffiti doesn't mean this is an undesirable neighborhood, then you will enter and find this tiny, cozy dining room.
In a place of honor on the wall is a decades old photo of their favorite regular patron from days gone by. Do you recognize her? I was proud to tell the owner that we were from her home town of St. Louis, Missouri in the US. I don't think he was particularily impressed with my tenuous connection, however. Probably because he had no idea where St. Louis was.
We were seated, and because it was a warm evening, the door remained open. That allowed us to enjoy this view.
Even though it is hidden away from the tourists, who will rarely find their way there, the reason Primavera do Jeronimo is a favorite for the locals is obvious.