I stayed a week in Sofia's flat as I was in Lisbon visiting and working remotely and immediately felt at home. This flat is perfect: super cosy and clean with lots of natural light coming in, cute and functional kitchen, comfortable bed and extremely quiet. I barely heard noise from the street or neighbors. The internet is fast - I had many conference calls and had zero issue.
The flat is very well located, near tons of cafes, restaurants and the lively neighborhood Principe Real where many young professionals and creatives are living. Also close to Santos and Estrela.
Communication with Sofia was excellent. She was very responsive and helpful when I had an issue. Highly recommend!