As soon as we arrived, Javier was there to show us around his place.
Javier was very nice, offered info and help about getting around.
The apartment is situated on the 5th floor (with an elevator), near the beach, 10 minutes walk from the nearest subway, in a quiet neighborhood.
The place is very spacious, clean and welcoming, with a fully equipped kitchen, air-conditioning, comfy bed and even an extra room to store our luggage.
Overall, a little bit more than you'd expect from a place not in the middle of Barcelona (noise, space etc..), and I would definitely recommend staying there.