Isabel and Antonio are probably the best hosts I've had. Isabel personally came to the bus stop to welcome us and gave us a quick tour and overview of the apartment. The recommendations vis-a-vis restaurants were also great. Speaking of the apartment, it is so conveniently located in the center but still very quiet since it is on a pedestrian-only street. Just about 5-10 minutes walk to the major tourist attractions. The apartment itself was clean and extremely comfortable.
The hosts were also kind enough to let us do a late checkout as we had a flight later in the evening. Overall, we had a wonderful trip in Sevilla and a part of it is thanks to Isabel and Antonio.