This apartment is located on the doorstep of Entenca metro and around 5-7 minute walk from Sants Estacion (the overground train from the airport is around 3 stops to Sants - around 15-20 mins). We could not have asked for a better located flat. Do not be deceived by the outside as once you're inside, the flat is spacious with a great open plan lounge/kitchen and a large bathroom with shower and bath (there is also a separate smaller bathroom with toilet/shower).
Mario is a great host who was available before and after the stay and has great knowledge of the local area - use him!
Many restaurants nearby (try the pizza place around the corner) and there are ample supermarkets on the door step to top up any extras you need during your stay.
Overall an enjoyable experience and would not hesitate recommending.