I had a great experience staying in Ana's place, The Apt is ideal for a single or a couple, well equipped, and at a perfect location. Ana is a very kind and responsible host, was superquick to respond to any question. The apartment was impeccable -- clean and functional. I stayed there in a week when temperatures in Madrid went up to 40+ C, and the AC was very efficient .. a life saver.
This is definitely a place I'll check its availability in future trips to Madrid !