I have been at Barcelona with my wife on march '14.
The Marta's apartment is very comfortable and spacious, as it seems in the photos.
It is located in an area of Barcelona quiet and well served. Near to the apartment you can find all that you could need for the staying.
Furthermore it's located near to the metro (green line) so it's very easy and quick to get to the city center or everywhere else.
Marta has been a perfect host, very kind and prompt to solve any issue.
We have enjoyed our staying, and we recommend the Marta's apartment.