The apartment is really great! Two ACs make the house very comfortable in the summer. It's about 20 minutes walk from the historical landmarks, but we really really loved the area. It was just next to a big plaza were locals (young and old) hang out at night. When we go back to Seville, this would definitely be our apartment of choice!!
Highly recommend it! Juaquin doesn't speak much english but communication was very very easy. He sent us a video of how to get the key to the apartment (very simple), so the language was really not a barrier at all!