We did end up taking a cab from the airport as we were not familiar with the area. We were dropped off at the door which was great. Monica was there with the key and let us in. It was great that we did not have to wait around. The apartment was as described, the view from the 2 balconies awesome.
The unit did have some information about the bus and metro an once we figured it out it was easy to get around. We felt welcome and did not really have much dealings with Monica during our stay which was fine with us. We like the independance. The bakery in the neighborhood was great and prices reasonable. We would definitely recommend the unit if you are planning to visit Barcelona.