Staying at Antonio's place exceeded my expectations.
The cherry on the cake (cause that's where all good reviews should start at!) was the peaceful and quiet location of the flat. True, there is a 'colegio' (school) nearby but as an early riser that did not trouble me at all. After a day out and about, I knew I could relax on the couch without having to worry about the roar of motors or the lively shouts from a nearby bar.
The loft is fully kitted with all you could need for a quick bite to eat, a homemade dinner, and even just making coffee - courtesy of the kettle for filter coffee lovers (not my case) and a vintage coffee maker which works perfectly well. Unscrew, add ground coffee, screw back on, on the convection hob it goes, and you can enjoy your steaming cuppa before you say 'vamonos!'
Cosy but with with plenty of space thanks to the tall ceilings and the raised master bedroom, the pictures are as accurate as can be. While there is not a lot of natural light streaming through the window (a common problem in Seville, as the streets are densely packed) this forces you to look for the sun elsewhere - and, therefore, to truly become Spanish for a while by living most of your life in squares, tapas bars, and so on.
All in all, a beautiful experience, crowned by Antonio's affable manner. He welcomed me in his home and I am sure could have provided me with many more tips than he already did, had I wanted to ask.
10 out of 10, for sure!