Carlos is an extremely nice and friendly host and we greatly enjoyed our stay in his apartment. We are not new to Lisbon and can honestly say that the apartment's location and how quiet it is make it a great deal. The kitchen was very comfortable to use and the shower is nicely designed. The only drawback for us during our stay was how cold during the cold wave that was in Portugal and the air conditioner's heating mode didn't really do anything to change the room's temperature. But we also experienced this in a lot of other apartments in the country, could be a general insulation thing.
We highly recommend it to other travelers regardless!