We stayed for two nights with a group of six people in the apartment and had a wonderful time! Sonia provided us with plenty of information on the apartment and Barcelona in general prior to our arrival and when we were there she was also always available for advice and any questions. The apartment was very clean, perfect for six people and very well located. A lot of sights we could reach by foot and for anything else, the metro was close as well.
I can only recommend this place and would choose it again any time!