Great place! In short:
+ good value for money
+ pool with guard
+ 5 min walk to supermarket & bio supermarket
+ city-center
+ clean
+ the quietness at night
We enjoyed this place with 2 couples for 1 week. We didn't see Javier when we arrived, due to work, but the concierge welcomed us and gave the keys.
The photo's are a good representation of reality. It has 2 bathrooms, a fully featured kitchen and it's location in the center is great. We recommend this place if you're planning to go to Madrid.