Alexa is a wonderful host. She's very friendly and communication with her was very easy. In addition she's an interesting person to talk to. Hosts like her are what makes airbnb so special.
The apartment was really clean, the room was nice and the bed very comfortable. Internet worked well. The location is good, it's not in the center of Madrid but it's well connected by metro and train (both at around 8-10min walk).
Overall I had a great stay. Thanks Alexa!