My wife and I spent a month at this apartment in January and had a lovely time. Nuno, the house manager was very responsive and took care of any minor issues we had. Paulo also reached out several times during our stay to check up.
The location was exactly what we were looking for. Graca is right on the edge of what I would consider the tourist area and it is a lovely Portuguese neighborhood. With that said, you are a 20 minute walk from the Baixa (Central Lisbon), a 15 minute walk to Castelo de S. Jorge, and Alfama and a 5 minute walk from Miradouro da Graca and Miradouro de Senhora da Monte which have two of the most beautiful view in Lisbon.
We had nothing but positive things to say about the apartment and would return with pleasure.