The apartment is located in a rather good and safe neighbourhood, and I was able to walk almost everywhere. The room was fine, and I didn't mind having another airbnb guest staying next room that was separated by a sliding door/wall meaning that everything could be heard... only until the moment when the neighbour went to sleep... Snoring people, please, don't stay in this apartment to respect the person next room. I barely slept for six nights, and I am afraid that even the host suffered.
Also, don't go to sleep too early on Saturday night but join the live, open-air concert that takes place just outside the window :) (actually, for the weekend there were stages all around El Poblenou - lot's of fun and very positive vibes)
David, the host, was polite, answered my messages and questions promptly, offered coffee and even sacrifised some of his time for my slightly late check out :)