I had a great time in Madrid also thanks to this fine Airbnb. The location could have hardly been any better, very central and only a quick bus ride from the airport. The space was safe, clean and well equipped plus you have the luxury of your own bathroom! Communication with James and Paul who manage the bookings was fantastic. The elderly couple you are staying with was friendly though he didn't seem interested in any communication or interaction but that's fine as people are different (the hostess was more engaging) and it didn't spoil my stay. :) I am very happy to recommend this place and would book again any time.