Fabrizia's place is wonderful, and centrally located on a quiet street in central Madrid. Its a very short walk to the metro and easy to get around with a few supermarkets very close by. Unlike most AirBnb's it feels like you are staying in a home, there are plenty of dishes, and cooking equipment, along with a toaster, coffee machine which are nice touches.
The apartment is located on the first floor so you need to walk up one flight of stairs to reach it. I highly recommend, and will stay here again when I return to Madrid. Perfect for four people.