We enjoyed staying in this apartment, the location is great, very central (close to the castelo sao jorge) with a lot of restaurants and coffees nearby. The apartment was very clean, confortable and calm. We only met the host very briefly as we left the apartment but she was very responsive via WhatsApp.
A few negative points though: there was absolutely nothing to cook or eat when we arrived so we had to buy it (salt, pepper, coffee, sugar, olive oil…) and a quite limited stock of toilet papers. It has been raining during our stay and the terrasse got completely flooded so we couldn’t really use it, also there was not heaters so the apartment could get a bit cold (but I guess it’s not a problem during summer… we weren’t super lucky with the weather mid-March ;)). Finally, someone came unannounced to fix something in the flat the last day our stay, so we were a bit surprised and were not sure what to do. He only stayed a few minutes in the flat but we weren’t super confortable with the situation.
However, the experience was overall quite positive and I would recommend staying on this apartment to visit Lisbon in the summer.