Very good place to stay in Barcelona! Nicolas is a very good host! He was very helpfull en welcoming, even though we were 1 hour later than we had agreed. There is a supermarket across the building and a very very good bakery next to it.
The metrostop 'poble sec' is just a 2 minute walk and is a perfect starting point to discover the rest of the city! Also the Blai is just a 3 minute walk away and offers some good places to eat (don't miss out on quimet & quimet).
The apartment itself is nice and clean, just like the pictures. The matras of the bed could be a little bigger/better, but it was fine for four nights!