Sofia waited for me in the flat and she was really lovely, offered me suggestions of places to eat and told me how to go to some of the main places.
The flat is very nice and big, the beds had two very comfortable pillows and were very nice as well with plenty of space to put our clothes.
The kitchen was also great, equipped with everything we would need.
Location is also good, very close to the metro station and walking distance from the city centre and great places to visit. It is on a very high slope but that's hard to escape in Lisbon where everything is up or down a slope.
Definitely recommended, good place and great communication with Sofia, couldn't ask for a better host.