The apartment of Sara and Sergio is amazing! I stayed there for almost a month and was working remote. The internet works really good, I was able to work without any problems. The apartment is located very central in Bairro Alto so there’s always a lot going on in the evening which I enjoyed. But it’s not too loud to sleep - the windows are shutting down the noise pretty well. From there you can reach all the nice spots very easy by walking or with the metro. The place is very bright and has a nice view to the typical old streets of Lisbon. I can only recommend staying here!