Good, not great location (there are better areas in Barcelona to stay). It is situated between waterfront and (closer to) Sagrada Familia, on the 2nd floor, on a fairly busy street with some street noise.
Good size flat for our party of 4 (2 adult daughters and my wife and I). 2nd bathroom and 3rd bedroom was important to us. I appreciated that there were a few outlet converters and a USB charger.