This is a lovely place. Virginia is a great hostess and the enormous apartment the nice part of town has everything one could need for a wonderful stay in Madrid.
Set in the upmarket Arturo Soria, the apartment building has gated security with a 24 hr guard, and is about 10 mins by car to the city centre. There are also Metro stops in the area but I didn't use them during my stay. I payed around 20 Euro from the tourist part of town by taxi at three in the morning, (which is reasonable for a European capital city.)
The apartment comes with a weekly cleaning lady and has all facilities.
The pool area is fantastic, and the nearby Brown Square has a few great bars and restaurants if you don't feel like going into town.
I thoroughly recommend staying here.