I stayed there 5 days with my family, the apartment looked great in the pictures, but was even greater when we saw it for real.
The apartment was perfectly located, I bought a metro card that I neve used because we were walking distance from all the main areas (Ramblas, beach, Born etc.)
The apartment was perfectly clean and very comfortable and convenient.
Just below, we found amazing restaurants (Mano lete and 7 portes) and bars to eat tapas and drink sangria.
I would recommend this appartment 5/5, this is maybe one of the best place to stay in Barcelona.