Great place, we unfortunately had construction going on nearby the entire time we were there so we couldn't open our windows at night without being woken up in the morning to loud noises, but that's not Isabel's fault. It's not the closest to the touristy bits of Madrid (ie museums, retiro park, and plaza mayor) but rather in a local, non-touristy area so if you want a more local experience, then I recommend it.
Isabel let me check in early and was very courteous and responded almost immediately to any questions i had.
The water pressure is superb and got hot quickly. Everything was very clean.