You have to climb 130 stairs to get up there. The apartment feels very tiny and you haven´t got anywhere to store your clothes.
The staircase to the terrace was a bit unsafe but it was a stunning view from up there.
Alvar was very punctual and friendly.
A bit pricy for what you get (stayed in Madrid many times) but it´s in the very center of town for us maybe too central and touristy.