I've stayed in many Airbnb's on trips to Madrid, but Maria's flat was probably my favorite. First off, the place is simply stunning, filled with natural light and panoramic views of the city center. It was also located in the heart of one of the trendiest neighborhoods in Madrid while still being walkable to all the tourist attractions. María was very responsive in all her communication with me, and was always friendly and professional. One drawback may be the sleeping situation, where the bed is located up a staircase in the attic, but was not an issue for me. Overall, it's a fantastic place.