Valentin's apartment is in a really central location in the old town of Seville. It's a couple of minutes walk to El Cortes Ingles in one direction, the Metropol parasol in another direction and I walked to the Cathedral in about 8-10 mins from the apartment.
There was a bottle of wine and olives in the apartment which was a really nice touch. The apartment would be great for one or two people, and there is a sofa bed as well if needed. There is access to a rooftop terrace - the building felt like one of the tallest in the area - and there are great views all around the town from there.
I found it to be an excellent base to get out and see Seville, and thoroughly enjoyed my stay there.