We have spend beautiful days in Sevilla and lived in Carlos Apartments.
My wife and me in one of them, our friend in the second.
Carlos is a really pleasant and helpful owner, who makes all for his costumers. When ever we had a question, he answered very quick and helped us. He gave us a lot´s of information and lists about sights, restaurants, ordered us a taxi.
The equipment and quality of the flats were excellent (like on the pictures), and we had a parking space in the garage.
Triana is a nice place and you can reach the city by foot easily in few minutes. The are a lot of nice tapas bars, where you can try different kind of spanish food, wine, beer, sangria etc. Carlos gave us very good insider tipps about tapas bars. In any case we recommend Sevilla in general and first of all Carlos apartments, which are also very calm.