This was our first trip to Seville, my wife and two boys (7 and 8). The apartment was spotlessly clean and had everything we needed, even a smart TV to get Netflix to the children could amuse themselves if they woke early! Nice comfy beds and powerful showers.
The place was very secure with two entry doors and an excellent concierge service.
Above all else, the best thing about this apartment was the location! Right in the heart of the cultural part of the city, a few minutes walk to the Cathedral and in a happening part of town. No taxis needed, everything was within walking distance.
Even though the apartment was so central, it was so, so quiet which we really appreciate as we live in the country and like to sleep in quiet surroundings. Highly recommend it.