Our family had a wonderful stay in Madrid. The house is perfect : great size, great kitchen, great rooms, confortable beds, air conditionning. It's beautiful and conformtable. Near to all needed services as well as to the Retiro Park, it is also very easy to go everywhere by metro (next to the Pacifico station, in direct line to the central stations such as SOL, Gran Via, Del Arte, Tirso de Moli na, etc).
The communication with them was really easy and fast.
I would highly recommend, espacilly for a familly.