We had a wonderful time in Barcelona!
The host was flexible when our flight was delayed and both nice and efficient upon checkin and checkout. The apartment was impressive, easy to reach and just like the pictures.
One of the beds was a little broken when we arrived, but when I mentioned it they listened and immediately took pictures of the damages in order to sort it out. The apartment is next to a very busy street and therefore the area is a bit noisy. The neighbour is a hostel and one of the nights the guests from the hostel were very loud and drunk until 3-4 in the morning. This, however, is not unusual in such a big city with many visitors, and most nights we slept like babies :-)
All in all we were very pleased with the experience!