Karina has been a really nice host, and the file she puts on the apartment gives great advice on places to go in Sevilla (Bar, restaurant, places to visit etc .... go to the Sal Gorda for some tapas, you won't be disappointed).
Regarding the apartment, you could not wish for a better location. At less than 2 minutes walking from the cathedral, and in a really nice building (even if palace would better describe it), with an amazing view on the roof. Everything needed was in the apartment. We had a minor setback as we discovered that most of the dishes were really dirty, but I honestly will put that more on the previous tenants than on the owners.
I will definitly recommand booking this place.