I stayed here with my partner for 4 days.
We chose this brand new accomodation because you need only 4-5 minutes on foot to get to the Fira (Barcelona Trade Fair Centre).
What is more is not far from Plaza de España and Barcelona main train Station (Barcelona Sants).
The flat had nice size and design: it was fully equipped with Kitchen, TV LCD and Hi fi stereo.
Even if Barri Sants is not the best place to stay in Barcelona, this accomodation was really ok, especially if you plan to go to the airport or to travel to Madrid by Train by avoiding carring your suitcases aroud the city.