Fernando's super comfortable, incredibly quiet place is right in the middle of the hip and diverse Lavapiés neighborhood. We stayed two nights and were amazed at how easy it was to get access to cool neighborhood spots for outdoor tapas with unusually good local beer, as well as easy access to transit at nearby metro stations and the Atocha train station. The apartment is also attractive, super functional, and very quiet (for those of us who really need a good night's sleep).
Fernando himself is the most fun, helpful, and friendly host I've ever had as an Airbnb guest. His suggestions and collections of local guidebooks helped us make the most of our stay in Madrid. Additionally, Fernando sometimes provided real-time advice, for example transit tips upon arriving, to make sure we arrived easily and safely. He was very easy to reach, so communication was very good. I would return anytime I'm back in Madrid.