Actually we didn't see Pablo and he asked another guy to give us the key but he was in contact with me from the moment that I booked the room in whats up and he helped how to reach the room.
About the room, it was clean and comfortable but keep in your mind that there are two more rooms which also rent by airbnb at the house and it was a bit difficult to share toilet and bathroom. Kitchen was really good with all the things you need for cooking. There is also a nice balcony where you can enjoy it a lot. About the location, it was very closed to metro station and it is near the two famous touristic attractions ( Sagrada familia and park Guell) and around 30 min to the beach. Just consider that if you want to stay till late outside(around 2AM) then you have to take taxi to back home because metro is working till around 12:30. I'm not sure about the possibility of taking night bus.
In general, it was an excellent experience and the room is recommended.