I booked this nice apartment for my friends, knowing that I wouldn't be able to join them on their trip to Madrid.
I organized everything with Anouk, she was great : she answered quickly and kindly, provided me with all the information I needed and confirmed that she would take care of my friends details of arrival. And she did, of course!
Regarding the place itself, I can share my friends comments: the apartment is great, really well located and nicely decorated. Their only challenge was 9 girls for 1 bathroom ;)