We visited Seville in Mid October. Javier met us at the train station and drove us the the apartment. His place is centrally located. The apartment is clean and fully equipped. It's just steps away from all major tourist attractions in Seville. There is even Starbucks around the corner.
The first night we went with Javier's suggestion for tapas. He recommended us going to Coloniales, which was on the same block as the apartment. Food was amazing and very cheap.

Strongly recommending Javier's apartment.