Apartment has great location. Five to ten minute walk to most of Madrid's main attractions. Very clean and spatious compared to most European old city type of apartments. Very nicely decorated and sits many people comfortably. Host was always responsive and helpful.
Could use more kitchen equipment. No laundry or dishwasher detergent in the unit. No spices at all for cooking (not even salt or sugar). Bring soap, shampo and conditioner as the ones provided are the mini sized found in most hotels andis not enough for the amount of people the apartment accommodates.
One room has French doors facing the dining and family rooms and the curtains inside are not long enough to cover all the doors, meaning the person sleeping or changing clothes in it will never have privacy.
In sum, the good things further outweigh the bad. I recommend it