What a terrific place for a family! The apartment was lovely - located on the 8th floor of an elevator building with a wonderful terrace and great views of Barcelona. Claudio was an unusually fine host. He met us in person when we arrived (even though we were very early for a check in) and personally hailed us a cab for the airport when we left at dawn. As others have noted, the apartment is immaculately maintained and has everything one could need for a few days or a few weeks stay. Also as others have noted, it is very well located for site seeing. What we found amazing, however, was the wealth of wonderful restaurants immediately nearby where we were generally the only tourists. Our favorite restaurants were El Viti Taberna and Bella Istanbul.
This is an amazing place to stay. I highly recommend it.