In one week of holiday all over Spain, this apartment has been so far the worst we stayed. It was really pretty (enough close to the photos) and also exceptionally clean (props to the lady who cleaned it, who was also the one to run our check in - she has been really sweet and nice). Also the apartment is in a great position, in the very centre of Madrid.
Apart from that, the stay has been really uncomfortable especially because we were 4 people. Two of us slept on the bed, two of us (including me) slept on the most uncomfortable couch EVER. It was impossible to even fall asleep because the bars of the structure of the sofa could be felt from above the suuuuper tiny mattress and would pinch your back, legs, belly and whatever part of your body you'd decide to sleep on.
Also the communication with the hosts has been very slow and pretty flaky.
There is definitely a lot to improve!