First, the con (no "s" because there is only one): the appartment is not well isolated from noise. We were woken up several times because of the neighbours, not because there were making too much noise, but because there is no noise isolation between the bedroom and the next appartment. We could hear them talking, taking shower, going to the toilets, watching TV.
Now the pros: the appartment is well located, near from Sants train station, just a block from subway station. A lot of shops are near the appartment (including 2 supermarkets). It's comfortable (except the noise), with enough kitchen equipments. The check-in was really easy thanks to the reception.
By the way, the pictures are from another appartment because ours had a balcony in the living room :)