I went to Barcelona with 5 friends for a bachelorette party.
Xavi, Oscar's friend, came and pick us all up (even if we made him wait because one of the flights was late) for a very convenient fee, and left us at the apartment. There we found Jennifer, who was super kind and explained us everything we needed to know about the apartment. We had ask her to buy some bottles of wine and she was nice enough to make our wish come true (even if, surprisingly enough, there was no water in the apartment).
The only complain I have is about the third bed we were supposed to find in the house, according to the house description, but we didn't. Instead there was a sofa bed. Anyway it was comfortable, but I would specify it in the details (and most of all, since we were six, I would have put sheets on the bed, which instead was undone). I'd also specify that only one room is private, while the others aren't, because you have to pass by them to get to the bathroom or kitchen. So I'd recommend the house to a group of single people like us, or just one couple + friends.
Anyway, the house is very very beautiful, clean and perfectly located in the Born area, very close to the Gothic one, also. It is perfectly equipped with everything you might need for cooking, eating, etc.
I would highly recommend this place!