The apt is close to Renfe(recoleto) station and metro(chueca) station. And also it takes only 10-15 minutes to go to 'museo del prado' and 'puerta del sol' on foot. It was very silent outside at night.
And the host Juan is very helpful and kind person. He offered every info of good restaurants and must-sees etc.
Don't miss the perfect 'home' when you stay in Madrid.