Natalia's hospitality as well as the apartment are beyond expectations. We felt very welcomed and had no issues in communication whatsoever.
The apartment is situated really close to a dozen of cafes and restaurants as well as really close to the Plaça d'Espanya. The terrace is a wonderful addition to give you a bit of leisure time if the weather is good.
All in all we highly recommend picking Natalia's place if you want to feel the heart of Barcelona comfortably.