Maria Luz's place was one of the most pleasant experiences I had so far in Europe. Cleanliness, comfort, location, communication, check-in, all of them are a 5 stars. My mom 80 years old joined the trip and the place was totally suitable for her. Most of interesting places are at walking distance and if not, it's a short bus ride for sure.
Next time in Madrid, Maria's place will be my first choice.