The location was perfect and was a close walk to most of the major tourist attractions. Juan Antonio and his wife were excellent in communications and very helpful. Unfortunately we did not take their advice on restaurants but that was our fault. We were extremely tired and our luggage did not arrive with us in Seville. Therefore, we retired quite early.
Make sure you ask for taxi directions. The house is located in a pedestrian zone but only maybe 10 meters from Juan Antonio's suggested taxi directions. It was a very easy walk from there to the apartment.
Also, make sure you get instructions on how to leave the building. We did not know that you needed to push a buzzer to release the outside door from inside. We struggeled to get out when we wanted but fortunately someone came in at the very time we were trying to leave and he showed us how.
All in all, we very much enjoyed our stay despite the street noise.