The apartment was just as described and in a great location for exploring Seville on foot (or using the bikes provided). Antonio was very helpful and has gathered lots of tourist info that is in the apartment waiting for you. He even made reservations for us to a show, and for a taxi to the train. He lives next door, so communication was always simple and quick (even by email). The neighborhood is lively and there are good tapas in several places less than a block away.
I would happily stay here again--and Seville is such a fun city that I hope I will!