We stayed in Raquel's apartment for a week. It was a great base for us for our sightseeing trip to Lisbon. We booked various tours and the meeting points were less than a 10 minute walk which proves that her apartment is central. The photos don't do it justice, the apartment is quite big. We took up her offer of getting transfers to and from the airport too. There's a supermarket close by too, Pingo Doce (go through the Rossio train station if you want to avoid the steep stairs).
As Airbnb Superhost ourselves, we recommend Raquel's place to others.