Antonio's apartment was great. It's in a perfect location (right next to the Cathedral and close to the Alcazar) - great if you want to explore the old city. It was clean, quiet and spacious. The only drawback would be the limited kitchen, but with so many delicious tapas places nearby you don't really need it. We didn't meet Antonio but were shown round by Christina, who very kindly let us leave our bags at the apartment past the checkout time so we could carry on exploring the city until we had to leave. Overall, I'd definitely recommend it as a lovely place to stay in Seville.