We stayed in Federico's flat for 3 nights and we loved. The apartment is exactly as shown in the photos and very well located (walking distance from Sol and other central places and 5min from Metro station).
Everything was in perfect conditions, very clean and with all that was needed for our weekend.
Federico's brother in law received us at the scheduled time and we was very kind to have some food and drink in the apartment for our arrival.
I recommend Federico's apartment to everybody.