I came to Madrid to find a place to live and the best part of this airbnb was learning how hot and sweaty interior top floor flats can be.
Anyways I had to cancel on the first day because the air conditioning unit did not work. It probably needed some freon or a replacement unit. Fortunately the host was nice enough to offer a full refund barring the cleaning and service fee.
The other negative was the quality of cleaning between guests.
The positive here was the central location. But with the metro I don't think it's very important.