Juan Carlos was always responsive when I had my questions about reaching the place and timing of our arrival. When we arrived Juan Carlos was very friendly, showed us routs of reaching the airport via the metro, suggested some nice places to eat in the neighborhood, and allowed us to contact him in case we needed to. His place had the best bed mattresses ! Really quite and safe. The apartment was very comfortable for our needs. It is located in walking distance from the main train station, Atocha, and there is a Metro station couple of houses down. At the same plaza there is a great supermarket, in addition to many vegetable stores all around. At first we were a little worried about the population we saw in the plaza. Juan Carlos assured us that it is safe. We had no trouble walking and exploring the area at all hours of the day and evening. We would stay there again if we travel to Madrid again.