I would definitely recommend this AirBNB for any travelers going to Madrid. It is centrally located very close to Gran Via and the main "Downtown" area of Madrid. You can walk anywhere in 20-30 minutes. There are many bars and restaurants closeby, as well!
The apartment is on the first floor so it is a little dark, but we didnt mind it because it stayed cool and allowed us to sleep a bit more if needed. The AC works fantastically in the house for those hot summer days.
Raquel was extremely responsive, responsible, and helpful. I couldn't recommend it more.