We had a great trip in Madrid thanks to Paula and this lovely flat.
The neighborhood is perfect since it's close to lively streets and quiet at the same time. You can go anywhere within 20min by foot.
The flat is exactly like on the pics: clean, modern, light. And Paula was extremely helpful: we could get the keys earlier and leave our luggages on the last day since there were no guest before/after our stay - she told us about plenty of great spots to discover (nice local coffee shop nearby with delicious cakes, cool rooftop up North, etc.) - and we even got a discount on the taxi back to the airport!
I would go back here if I ever come back to Madrid. Highly recommended.