This apartment is a screaming deal for a solo traveler wanting to sample central Madrid. Luis is a great host, the apartment is super clean, and it's less than a 15-minute walk from the big 3 museums and less than a 30-minute walk from the Plaza del Sol in the heart of the city. It's also less than a 10-minute walk from 2 metro stations and the Atochia train station, which is where the express bus from the airport arrives (and departs).