We stayed in Kristian's flat for 2 days. It is a very clean and tidy flat in the heart of Madrid, 3-5mins walk to metro station and supermarkets. It is a very stay place if you hang around Madrid as visitors. It is also super recommended if you travel for work as the flat is very quiet. Before moving in I had this worry, but it turned out I was over worried. We did not see Kristian as he was away at that time, which is a pity. But Kristian provided every detailed information for us to find the place from the airport, it helped a lot. Strongly recommended to other people planning to visit Madrid and would definitely choose to stay Kristian' flat if travelling to Madrid again.