Fantastic apartment and even better customer services.
The apartment is in a superb central Madrid location and couldn't have made getting around Madrid any easier. Close to La Plaza Mayor, Mercado de San Miguel and a whole host of bars/restaurants, it's the perfect place to stay. The apartment was also extremely clean, very modern and had all the amenities needed.
With regards to the customer service, I was contacted continuously, from booking right through to my departure of the apartment; couldn't ask for more really.
I would recommend wholeheartedly.