Arina's place is located en El Poblenau right in front of the beach, which was incredible! Poblenau has a local vibe, and is a bit quieter and cleaner than Barceloneta and the Gothic district. Roughly a 15 EUR taxi from Barceloneta, and it's easy to get a taxi right in front of the apartment. The flat itself was very clean, and communication was very easy.
My only criticism is that the wifi in the apartment didn't actually work, which was a huge selling point of the apartment as we planned to work while away, and one of our guests actually had to check into a hotel as a result. Also there was some insanely loud building work being done next door, which certainly meant an early wake up!