My mom and my brother stayed at Kristian's place, they enjoyed they stay inn Madrid, the apartment is in a very good location, walking distance from the metro, shops and restaurants, the check in and check out was easy, Kristian was very helpful in everything.
the apartment is as it looks on the picture in general is a good place to stay, however the pillows are quite old and seems they never been washed, you could see they stains of sweat in a yellow color, other that that the apartment was clean overall.