The flat was very nice and central, but even though it is right on one of the main streets it is surprisingly calm. It is very well equipped and has a nice design. The host David gave us a nice and warm welcome and explained how everything works. The only thing we disliked was, that the flat was a little dusty, even though the cleaning woman was in there right before we got there..
But all in all we would highly recommend the flat, we would stay there again anytime we get to visit Barcelona! Thank you David!