Apartment is located on a quiet street, within short walk to Gracia or La Sagrada Familia in either direction. The building is old, with a small elevator, and although we didn't hear the neighbours too much, the downstairs resident complained on multiple occasions about our baby's crying and clumsy walking/falling.
The apartment could use a good, thorough cleaning. Cabinets, shelves, around and under all furniture - I was surprised by the amount of dust+hair and debris found everywhere.
And on a small note - the beds were all quite creaky, so if you're a light sleeper, that could be a problem!