Directions to La Posada de Huertas

From the Airport Madrid-Barajas:
Take metro Line 8 (Nuevos ministerios - Barajas) to Nuevos Ministerios. Then take Line 10 to Tribunal, and finally Line 1 to Anton Martín. Journey time is about 45 minutes and the cost of a single ticket is €1.15. When you walk out of Anton Martín station, walk down Calle de León and turn down the first street on your left, Calle de las Huertas.

From Atocha train station:
Take Line 1 directly to Anton Martín Station. The ticket cost €1.15 and takes less than five minutes.
You could also do it on foot in about 10 minutes. Take Calle de Atocha 'til Calle de León and then turn down the first street on your left, Calle de las Huertas.

From Chamartín train station:
Take Line 10 to Tribunal stop, then Line 1 to Anton Martín. The ticket cost is €1.15 and the journey should take about 25 minutes.