It was a last-minute decision to stay at Kristian's apartment after being let down by the standards of a local hostel we'd booked at, but we were very glad we did! The apartment is clean, more than large enough for the three of us staying (a couple plus a friend) and conveniently located right in the centre of town - a short walk from Plaza Mayor. Kristian was an excellent host and went out of his way to offer advice on places to eat and where to visit (great tips for the rooftop terrace at Círculo de Bellas Artes and sunset-watching at Templo de Debod). The apartment is on the fourth floor, although there is an elevator so moving suitcases up and down was no problem, and due to its location it can be a bit noisy during the day, although it quietens right down at night so unless you're planning on sleeping away your holiday then again it's no problem. I wouldn't hesitate to recommend the apartment for people looking to explore Madrid, and want to extend our thanks to Kristian for his hospitality and saving us from a rubbish hostel. :)