My friend and I never got a chance to meet Francisco, but we did meet his brother Mario. Mario met us as soon as we arrived at the entrance to the apartment. He was extremely helpful in showing us the place and giving us advice on Seville and what the city had to offer. He even found us a place to stay in our next stop, Granada, when we were having some difficulty.
The apartment is in a great location, clean, comfortable and just what we wanted: a place to drop our bags and explore the city. At night, there was action in the neighbourhood with a local bar and a few cafes, but in the flat, it was totally quiet. The little balcony overlooks a beautiful little courtyard. Mario lives in the very next building and was there to help us when we needed it.
I highly recommend staying here.
AND ... just around the corner is a Gelato store that served the best Chocolate Negro that I had while in Spain! :)