I loved staying with Azul and Carlos, really. The place was clean and quiet and I felt very at home. They're both experienced travelers and love sharing their experiences and helped me make the most I could out of Madrid even though I stayed only one day!! There is a bus to the Centre of Madrid that leaves from across the street to the house. I felt safe and welcomed for sure during my time. Also grateful to them for dropping me off to the airport the next day. A great experience over all!!!!