If you ever find yourself in Madrid, stay at Fernando and Teresa's place. The metro is just around the corner, get a ticket to Sol (you will need to change trains at Tribunal) and you arrive near Plaza Mayor in 20 minutes . Even though the apartment is on the fourth floor we had no trouble climbing the stairs and we're in our 60's. Fernando is the perfect host, he really did make our stay special. The restaurants he recommended were great and within easy walking distance and there is a large supermarket nearby as well. The apartment is super clean and comfortable with a great view of the city. This is definitely our favourite airbnb.