The location of the apartment was pretty good - in old Madrid where most of the important places are (It's a 10 minute walk to the Prado Museum). Even thought the building looks old from the outside, it looks newly renovated and well done up from the inside. The flat is tastefully done up - looks just the pictures!
We had slight problems with the air conditioning - it was not very effective and got a little hot sometimes. We also had to wash some utensils and the toaster before using them since they were dusty and had not been cleaned properly. All in all, a great apartment but needs to be cleaned and dusted well.