This is our first booking through airbnb and it was an absolutely great experience! The apartment is exactly as shown in the pictures - clean and spacious, kitchen well equipped. Nice little terrace. It is very close to the metro station only about 1-2 min walk. Laia is a very nice and helpful host. She and her husband are able to come by and solve problems immediately after we notify them.
Only shortcoming that I can think of is the location: it is in a quiet neighborhood a bit far away from the city centre (3 stops from passeig de Gracia) and there are not as many stores or restaurants within 10 min walk. Also walls are thin and thus not very soundproof - but it seems to be a problem in many spanish buildings...