You will have a hard time finding a better place to stay than Calle Relator. Your host is very helpful, the apartment is very centrally located, but still very quiet, making for a good night's sleep. Lovely bedroom, pleasant bathroom, local TV channels that helped me improve my Spanish and my knowledge of the area, wonderful panadería next door and a short walk to supermarket and bars/restaurants especially in Calle Calatrava. I wish I had taken the tour with "el bus turistico" (the hop on- hop off bus) the first day as it gives you the general idea of the city, distances, locations etc. Marcos is very knowledgeable about Sevilla, and I just regret having too short time to follow all his advice about places to see! Nos vemos para la feria de abril ;)