The place is a lot smaller than it looks in the pictures, but it does have all the essentials you need for a short stay.
The area is really nice and very much alive. Everything is within walking distance! Don't expect to meet Julio or Sarah for some tips though: they leave the keys of the place in a local bar. Don't expect them to keep your luggage after check-out at the bar either - they won't do it. So we ended up having to visit Madrid with a huge suitcase on our last day, because there is just one place in town where you can leave it, and it's nowhere near the apartment!
Anyways, our stay was okay, but a bit on the expensive side considering how small it was, and all the IKEA furniture. Also, the building is quite noisy in the night because the stairs are made of wood and you can hear people walking on them!