Carlos's place is very clean, comfortable and spacious. And Carlos is a wonderfully attentive and responsive host. His sister, who lives nearby, is also available and while I was there, even stopped by to bring fresh towels to the apt. The neighborhood is excellent and writhing easy reach of the airport or Puerta Atocha, the centra bus and train station in Madrid. In fact, I took public transport from Atocha and to the airport w/my bags and got to and an from each w/in 45 mins for under 5 euros. There are mercados nearby, as well as a place for morning coffee across the street. The doormen at the building are also very helpful --one lent me a wine opener and another helped me with directions to a tennis facility. If you are looking for a safe, clean, very comfortable, modern place in which to stay, you cannot go wrong w/this flat. I would def stay here again.