This is a fantastic apartment in the Eixample.
Pros: great space, bedrooms in the back so quiet for sleeping, plenty of space if you want to cook, 2 full bathrooms, plenty of closet space, fantastic (!!) neighborhood filled with restaurants, bars, and supermarkets (and THE BEST DELI). Clean and well-cared for. Angel was accommodating and very responsive, all through the trip, even to arrange a taxi for us a 4am on our last day. Would definitely rent this place again should we return to lovely Barcelona.
Cons: Not many, really. We ran short of toilet paper so had to buy (next door, so hardly a big deal), and would have loved another set or two of towels (we weren't interested in doing laundry, really, and we didn't really understand how the w/d worked and didn't have soap so just made do with what we had).

It was just two of us here, so we had ample space. Another couple would have worked as well, without stepping on toes too much. All in all, a really fantastic rental.