Josep met us at the apartment and explained everything. The apartment is on the second or third floor (depending where you come from). The building is on a busy artery, but it is facing away and thus very quiet as the listing mentions. We love the area, since it is not very touristic, while not far away from the attractions.
Barcelona is small enough that most attractions are within easy reach, and the public transit is awesome. There are several subway lines plus the train station within 2-5 minutes walk from the apartment. Montjuic is also within walking distance.
There are 2 produce markets in the vicinity, and plenty of supermarkets, bars, restaurants, bakeries and stores.