Great location, super easy to get around from with close links to the trains and metros. Also very walkable to lots of cool areas. The apartment was exactly as described, with a lovely balcony overlooking the street too.
The area can be pretty sketchy, especially at night or on your own. So pay close attention to your surroundings and try to be in a group if possible. I had no problem, but especially for girls on their own it can be dangerous, as are many places in Barcelona, so just be aware.