Sara's apartment is great! Compact, quiet and easy to live in, and with a nice rooftop terrace. You do have to walk up the final flight of stairs, but it's just one floor and not hard.
It's walking distance to many sights, and we walked to La Ramble, the gothic quarter and to the beachside several times. Gaudi's famous Casa Battlo is 5 minutes walk away and there are lots of wonderful cafes, bars, restaurants close by. The metro is within 5 minutes walk too.
We found it ideal for a couple and would love to stay there again!