I absolutely loved my stay here - I wanted to extend but of course it was fully booked! Super responsive, helpful and kind hosts - they even invited me to have lunch with them when I arrived. Guests are offered toast, milk, bread, coffee etc and the water filter was so nice during the July heat. The room is very tastefully furnished and the apartment is so modern and bright and clean. Note that the AC is portable so I would say it's effectiveness is somewhere between a fan and a proper AC but it shouldn't be much of a problem unless you're lucky enough to visit Madrid in the middle of the summer :)