The apartment has everything you need and want. Decorated with taste, a fully equipped kitchen (and coffee), nice shower, good (big) bed. Airco and blinds. It is not very close to the center but metro and taxi's are very nearby. There are places enough to have a drink in the evening nearby in the area, so are supermarkets.
But best part is the communication with Guillem. We arrived very late (around midnight) and Guillem was very accommodating. He responds immediately when you text or call him, which was a blessing when on our way to the airport for departure I noticed I left our passports in the apartment. He came to the rescue and we still made our flight. I recommend this place to all who visit Barcelona.