The apartment was sparkling clean when we arrived. Location is perfect in a very calm and nice neighborhood.
Daniele and his team was very kind and responsive and even came to the flat at Sunday night when the plumbing in one bathroom was stuck !
However this flat was not very suited for our long stay : there was no products left to cook (salt, pepper, etc..) and very few kitchen utensils (eg. no bowls). At last, we felt it was very cold in January as the flat is not really isolated (and the AC block provided little heating) and the flat is obviously built to keep the cold inside as it's probably the case for most of the houses in Sevilla.
But that's definitely a good choice for a short city trip in spring or summer !