I can only recommend this flat.
The position is perfect, just a few steps from Placa de Catalunya and the metro station.
The flat is new, comfortable, with every service you need during the stay.
It was an excellent way to spend time in Barcelona. I absolutely loved it.
Communication was always easy and fast.
A perfect touch: I found toothbrush, a dishcloth and soap for the washing machine and the dishwasher.