Dealt with Alex's sister Laia, since the couple were out of town. Laia helped us with everything we needed, down to maps and information about attractions and restaurants. The apartment was super clean, and a walk away from Park Guell. Also walking distance from the metro station which is a few stops from the city centre. A lot of walking up and down hills though, but the exercise is good if you can walk. Barcelona is a beautiful city, but we also enjoyed staying indoors in the apartment.