Marcello is a very good and responsive host. As for the place, I loved it for the terrace/balcony alone. Being on the top floor means the terrace gets sunlight for most of the day. The views of Tibidabo are very nice and, having lived in Ciutat Vella before, I can honestly say that the air just smells fresher up in the hills. The place a bit out of the way, but the L3 metro, with direct lines to Diagonal, Passeig de Gracia, and Plaza Catalunya, is only 5 minutes away.