This is the best AIRBNB you can stay at in Madrid, and this is coming from someone who has lived here for 2 years. The location - incredible, price - ridiculously affordable, cleanliness - amazing!
The area is quiet, yet close to everything you need. The La Latina metro stop is just 2 mins away walking, the room was huge and had a nice closet as well. I stayed for ten days and heck, I'd love to live here for another year if I could!
Also, the place is super clean - its perfect for longer stays as well. Highly recommend!