I had a great time staying at this place. It feels cosy and it is comfortably furnished. I only stayed for a couple of days, but it has all the amenities for a long-term stay as well!
The location is excellent. The immediate neighbour is a bit upscale and is relatively quiet. There's great places just around the corner for breakfast, lunch and coffee (e.g. Heim Cafe). If you want to explore a bit more, you can walk to the city center, but just as easy take the bus/tram to either the center or belem and cascais.
The welcome was warm and I received many excellent suggestion on the area, how to get around and what to do.
10/10 would recommend and will definitely be back in the future