Calle San Mateo apt is one of the best Airbnb’s I’ve ever stayed in. The place is easy to reach from the airport, the space is awesome and clean, and it's located near all the major tourist attractions and the train station, but in a young and buzzy neighborhood away from the tourist and bar crowds.
Felipe&Pilar are great hosts. They gave us a bunch of local tips of must see restaurants/bars, shopping and all were a perfect 10.
I'll definitely stay here when I return to Madrid.