We had an absolutely glorious time. The only caveat is, if you are also a naturally exuberant group, you might want to choose elsewhere, only because you're staying in a beautiful apartment block and the other residents are obviously (rightly!) fed up of over-excited travelers thundering in at all hours of the day and night. So, if you're choosing between this place and somewhere else, that might be a factor.
It's so perfect and beautiful and the area is GREAT - some amazing food really near, friendly bars and walkable to Las Ramblas (but away from the chaos a bit) .