We were met by Jordi (Anna Maria's son) at the airport and were taken to the flat where he and Anna Maria showed us where everything was and how to operate it. We arrived late morning and were very grateful that the apartment was made available to us immediately (check in is usually 3pm). The apartment is as described, small but comfortable and a very large sun terrace. It is very centrally located and lots of places are easy to reach on foot. The metro station is very close and really easy to use. After hours of sightseeing (and good food and drink) the sun terrace is a real bonus for chilling out.
One very minor thing that would improve the facilities would be an extra sun lounger (there were 2 chairs and 1 sun lounger).
We would certainly recommend it to our friends and family.