We stayed at Aymeric's place for 2 night, we really loved the place.
Close walk to the Alcazar and Cathedral. Easy parking downstairs is really a plus.
Aymeric spent time to explain the attractions, he prepared Google maps for all the attractions, and the house location, so easy to go to the attractions and back to the house.
I would stay at Aymeric's place if we are back to Seville again.