David's clean and lovely place is located quite central. You can walk around 600 metres to the nearest metro station (St. Martin) which will take you directly to central, Sagrada Familia, and Passage d'Garcia (Casa Mila and Casa Bolliteli) in more or less 30 minutes. There are supermarket and fruit stores nearby and we can make our own simple food in his very efficient kitchen. The wi-fi connection was superb and the hot water was very good. His room was also completed with air cooler and air warmer device. David was also communicative and easy to contact via whatsapp.
I would highly recommend this place as your base to explore Barcelona.