We really enjoyed our stay at Carlos and Isabel‘s place. We liked that the neighborhood was much quieter than more in the city center but at the same time has tons of great restaurants in walking distance. A wonderful Miradouro is just a view minutes away and the tram E28 is just up the street. We recommend taking an Uber to Belem or places farther away in the city as it is really comfortable and fast and sometimes the same price as public transport (including tip for the driver).
The apartment is comfortable and in great shape, kitchen is new and modern, Internet is very fast (we worked remotely and it worked perfectly). The building has very thick walls and we guess that‘s why it was a little cold (in march) in the apartment - oftentimes it felt colder than outside (but we managed since there is an AC in every room for heating).
Carlos and Isabel were great and responded super fast. Ask for their recommendations for restaurants - they are great!