Our overall experience at Ana and Vitor's Sky Loft was a nice one. As described, the loft is in a central location close to tram 28, a number of supermarkets and other facilities. The neighborhood is quiet and the loft is on a small street with only pedestrian access so traffic noise is not an issue.
Ana and Vitor's friend welcomed us, gave us a very useful map and tips for getting around; they were also very accommodating in letting us check out later than normal due to our late flight.
A couple of small issues were a leak in the bathroom when we arrived (which Vitor fixed the next day) and a small leak in the kitchen that they said they would fix once we left.
We did not meet Ana but Vitor seemed like a very nice and welcoming person. Overall they were very pleasant hosts and we had a nice time in Lisbon.