Location wise it's the best in Madrid as you are close by gran via. You should expect some external noise but because the flat windows are facing inside'court of the building, you will not hear much from the outside.
Very standard and simplistic furnitures but with modern taste. you have a Nespresso machine, a German brand hairdryer, a small champagne as welcome gift and a small wardrobe for a big bed. Perfect for short stay.
Negative points are for the noise inside the building and the terrible smell from the toilet water which tenants are out of control.