My wife and I stayed at Willem's apartment for 4 nights and we enjoyed it very much! It took us not more than 10 minutes to get there from the airport by cab. We were charged flat fare of 20 euro. The apartment's location is only 2 minutes walking distance from the metro stop called Ciudad Lineal and it takes around 7-8 stops to arrive to the center of Madrid, Puerta de Sol! It's a safe neighborhood and very peaceful! The apartment is very clean in modern style! I would highly recommend to everyone!