My experience renting from Daniel was perfect. The apartment is centrally located and very well-equipped (try out his sound system!). I stayed there with a friend and we both had enough space to be comfortable and stay out of each other's way. Daniel helped me out in a pinch (I locked my cellphone in the flat when I checked out) and accommodated a last-minute time change for check-in. He was very responsive and friendly whenever I needed to get in touch. Would absolutely recommend his place for a great time in Madrid.