Wow - what a great find this was. Beautiful place, convenient, quaint town and really nice hosts.
The home is really nice and clean and new. The room looks out upon the city of Barajas and the airport and the mesas in the distance. It is heated and air conditioned and you have your own restroom two steps from you room.
Barajas grew from an old Spanish village. It has a town square and several restaurants only a block from the home. The square reminded me of the old town square in Santa Fe, New Mexico.
There are many busses into Madrid or to T1-3 at the airport. The Metro Subway stop to the T4 (international terminal) airport is 9 minutes walk, so it is perfect for your first or last night in Madrid. Also, since it is on the metro, you can easily go into Madrid' central Nuevo Ministerio Subway station in a few easy minutes.
I would most definitely stay again.