Very comfortable apartment. Alba and Carlos are very friendly and hospitable (unfortunately we didn't have opportunity to meet Alba in person but by the phone she helped us with everything we ned).
The neighbourhood is quite nice, very close to metro station from which you can go directly to Sagrada Familia (very nice option when you have tickets for specified hour of visit). There is also nice Carrefour Express, so there is no problem to get whatever you need to eat (opened also on Sundays which is very useful).
I hope when I will be going to visit Barcelona again this apartment will be free because I can't imagine I could choose another place to sleep :-)