Mario was a fantastic host, friendly and welcoming. He gave me some tips and good recommendations to make the most of Madrid. The apartment is located in a very nice area, near Chueca, with lots of cafes, shops and nice bars. Very well equipped and clean it is the perfect place to enjoy Madrid. I definitely recommend this place!
PS: I forgot my phone in the flat when I left, and Mario was very helpful to sort it out. He is the best host ever!!!