I'm so glad I met Marina, she is amazing host, and apartment she rents is in excellent condition, a small but highly functional, on perfect location, only 10 minutes from the Puerta de Sol, with everything you could need during your stay in Madrid. Marina explained to me in detail by mail how to get from the airport to her apartment, and sent the subway map, and also prepared a map of the city and informants of various museums and places that we should not miss in Madrid. So, thanks Marina for great time in Madrid.