First of all, check-in is different. It's not the usual airbnb style that one expects. More like a third party contract style. There's charges for check-in after 8pm and a number to call (meaning there's overseas charge on my mobile). I realised this is common in Barcelona when I search other airbnb listings too.
However, Joan's place is really convenient. There's a small supermarket right downstairs. A few restaurants just a short walk away. And a nice Columbian bakery next street! Metro stop "Monumental" is right round the corner too!