We spent 2 nights at Antonio's flat and everything was perfect.
Close to the historical city center (15 mins walking), the flat was very clean and the neighbourhood was nice and quiet.
Outside, the temperature was around 40°c in the afternoon but inside the flat we couldn't feel this heat at all (we didn't even used the air conditioning).
Antonio is a great host ! He gave us many useful information about the city (monuments, flamenco, gastronomy, etc) and was very helpful until the last minute (thank you again).
I recommend this flat !