If you want to stay in an ideal part of Sevilla, have easy access to all the major sights, and be with great people - you need to stay with Carlos and Antonio.
Their apartment is lovely, clean, comfortable, quiet, and is full of amazing vintage furniture and art, all courtesy of Antonio.
The place is easy to find, and is about 20 minutes (walking) from the Alcázar and Sevilla Cathedral. And the walk to and from is lovely, full of little tapas bars, caféterias and shops. The apartment is in the best location to give you an understanding of authentic Sevilla, with its narrow cobblestone streets.
Carlos and Antonio are gracious and friendly hosts. They know so much about the town, the places to see, and the highlight of my trip was sitting and talking with them about their city.
Would 100% recommend this apartment, and Carlos and Antonio as hosts!