I booked David's flat for my parents. They really enjoyed their stay thanks to Davis who gave them a lot of recommendations and was easy to reach. The flat was basic but clean, nice and very well located to visit Lisbon.
However, it was noisy during the night as it is located in the lower ground floor: you can hear all night long cars and people.. also because of the lower ground floor, there are not to much natural light inside the apartment.
Anyway, my parents had a great stay so thank you.