What a great place! The space is large and well equipped, and the location can't be beat. After wandering all around Barcelona for five days, there wasn't a single neighborhood I liked more than this spot in Gràcia. Two bathrooms is such a luxury while traveling, and we had enough space to really spread out and relax. It was too cold for us to hop in the pool, but the view of the backyard was worthwhile. Stay here to enjoy being in the thick of things, get great recommendations from the thorough house guide and from Ivan, and get a glimpse of what it might be like to live in Barcelona. It's right between two Metro lines, which took us just about everywhere we wanted to go (including easy access to the airport and the main train station).
Just remember that Barcelona's a really dense city - bring earplugs, even if you're not usually noise sensitive. You're in the middle of lots of families and people going about their lives. I was glad to have mine, because they let me sleep very soundly even when the people around me kept different hours than I did.