The location it is at the very center of Madrid, close to most of the attraction like: Gran Via, Callao, Puerta del Sol, Malasaña. A bit noisy if you want to relax
The staff was nice and polite.
How ever, the apartment look so much nicer at the pictures. The apartment was not that "new" and it is really dark.
If you just want a place to sleep, and be outside the whole day, it is ok.