The flat was big and clean, with a small balcony, perfect ! The WiFi works great, and there's an Apple TV wich is just great of you earn an iPhone !
Also, it's located just in the middle of the historic center, close from everything ! And on the top of that, there's a laundry service on the last floor of the building, wich is very convenient if you managed to get your hands on enough 100/500 pesos coins !