My family and I had a wonderful one-week stay here. The location is perfect, very close to the red line station. The neighborhood is one my favorites in Barcelona - very residential with lots of great restaurants and bakeries. There's a mini supermarket across the street that's opened late.
The apartment is clean and spacious. The sofa bed is incredibly comfortable. There's a large kitchen which we used to cook many meals. One downside is the wifi is slow and died on us a couple of times. If this is not a deal breaker for you, then definitely stay at this apt. I'll be staying again when I come back.