Whatever your expectations are, Pau will surpass them. He could not have been more communicative and responsive to every question or concern we had. His place is located in a quiet residential neighbor only a stone's throw from the beach and in an area that offers a nice break from the bustle of downtown Barcelona. There is an easily accessible metro stop only a short walk away and plenty of neat restaurants and bars nearby for you to practice your Spanish. The whole entire apartment was spotless upon our arrival and the amenities all worked flawlessly.
Overall, only positive things to say. If you are going to stay anywhere in Barcelona, stay with Pau. We certainly will whenever we return.