My girlfriend and I stayed in Helena’s apartment for almost two weeks for a mixture of remote working and exploring Lisbon.
We only have positive things to say - the apartment is spacious, stylishly decorated and receives lots of natural light. The WiFi is also very fast and reliable.
While not in the touristic centre, this is only a half hour walk away and there are plenty of excellent options in terms of restaurants, bars and cafes nearby.
Helena was very friendly and communicative and while not fluent in English, will help you with anything you need.