We had a great stay in this appartement. it is idealy located next to the center (plaza di catalunya, old barcelona). We only took a taxi once to visit the sagrada familia. The appartement is spacious and confortable, you feel immediatly at home. the balcony is a real plus. It is quiet (on a small cour, not on the street). Finally the Be Barcelona team is efficient and friendly. A great place to stay and enjoy Barcelona for a few days or more.
Note for disabled travelers : everything is accessible but the bathroom. so only OK if you can walk a little.