Elquisson and Julia's place was really great. We had contact with Julia from a few days before our departure until we arrived at the apartment. Julia was very kind, answered all our questions and gave us tips for our stay in Lisbon.
The twin bedroom that we had was spacious and the bed was comfortable. Even though there were three other rooms with airbnb guests around us, we didn't hear any noise from inside our room.
It was generally very clean (bathroom cleaned several times per day) and amenities were always available. However, best of all was the prime location, right in the city center with walking distance to all points of interests.
We highly recommend staying with Elquissons and Julia if you have the opportunity.