This was our second time in Barcelona, but by far the best experience.
Bus 46 from the airport takes you directly in front of the building in about 20 minutes, and it's also valid with Barcelona Travel Card.
The place is absolutely beautiful, very spacious and cosy. The terrace is truly the best way to enjoy the coffee in the morning, as it has a nice view and the fresh air is just perfect.
Location is quite good as well, at walking distance from Placa Espanya, which is a major starting point for all attractions. In 20 minutes you can get to Rambla, Sagrada Familia, Parc Guell, Beach, etc. by bus or metro. Trips to Montserrat are also from Espanya railway station.
As for Vicky, she responded to airbnb chat instantly and made sure we had a nice stay. She was even kind enough to let as leave our luggage in the room on our last day, since the plane took of later in the day.
Overall a great experience, would recommend to anyone looking for a nice stay in Barcelona.