We had a wonderful stay in Barcelona. Mariana was warm and very helpful, before and during our stay. The apartment was lovely and centrally-located. We only stayed there for 2 days but we were able to see a lot of the city just by walking everywhere: La Rambla, Plaça Reial, the Gothic Quarter, Sagrada Famiglia, Parc Güell...
Also the bedroom was really quiet, you'll be able to sleep in if you want to.