The place was ok and we still had a good time in Barcelona but there were a few issues.
The most important is mosquitos. The apartment has opening in the wall and air conditioning that is not properly isolated from outside. Mosquitos are coming in freely when you have lights on in the evening, in spite of all the windows and balconies being closed. I was getting multiple bites every night.
Shower and furniture are wobbly and feel like they are about to break. The freezer was filled with ice - I had to de-freeze it and clean it myself. There was quite a bit of dust in the apartment.
You can hear the neighbours talking, moving furniture or parting. There is also large construction sight opposite of the apartment (fortunately quiet during my stay).
I like the neighbourhood and the fact that it's close to the beach. 30 min walk from the old city centre.