Warmest recommendation possible for Blanca and Cassio, and the room itself! Truly wonderful people and hosts, that make you feel like you are part of their family.
I totally agree with other reviews for this AirBnB, location is great, very well connected to public transport and metro to the airport. Furthermore, all the main sights are in walkable distance.
The room itself is quite spacious, with everything you possibly need on your Madrid exploration trip. As I also worked one day from the room, I can confirm that WiFi is excellent!
Gracias, Obrigado Blanca & Cassio for everything! :D