Great appartement! Very warm welcome by Ana and her mom, we felt really welcome. Perfect location in the city, 5/10 min from plaza catalunya (on wich u arrive with the bus from the airport). From here you have great access to the whole city center.
We stayed with 9 people, more then enough space. One point of attention: be really quiet after 10. Even walking thrue the hallway or sitting and talking is too loud for the neighbours!
Overall it is a great place to stay, recommanded!