We really enjoyed staying in Sara&Joana's flat!
The location is excellent, close to the nice bars and restaurants of Chiado and Praça Luís de Camões, 15 min walk to Baixa and 5min walk to the tram (28E) which can take you all the way to Alfama. The flat is spacious and comfortable, with plenty of light and places to work from home too if interested. It has all the amenities necessary for a longer stay.
We'd come back here if we were to visit again!