It was my first experience with airbnb and I can say that it won't be the last and certainly not my last with Madrid and Marga's flat! Marga was great at answering my emails, she made the whole renting process super easy, she was really friendly and easy to talk to. Now, the flat: more central, I don't think it could have been! The metro was just down the street but in fairness, you can easily walk everywhere. The flat looked exactly like on the pictures, everything is new and decorated with taste. Everything I needed was there. There is a lift in the building. THe flat is also 2 minutes from El Corte Ingles supermercado which was quite handy. The whole area is lively and full of restaurants and shops. All the major touristy areas were really close (Plaza Mayor, La Latina, Palacio Real, etc), no need for the underground. From the airport, I suggest you take the express bus to Atocha and then the underground to the station Vodafone - Sol and the flat is just there. So, if you want a pretty flat with all the facilities and perfectly located, and a perfect host, go for the Picasso Madrid Boutique suite, you won't be disappointed!