The appartment is located in a great location, close to a metro station and many stores, restaurants etc. It is super clean and very spacious, can easily accomodate two couples. The shower is SUPERB and the A/C works really well (which is rare in Madrid).
HOWEVER
We noticed the WiFi signal was either terribly weak or not working at all. We notified Miriam twice however this issue was not fixed until we checked out.
As we had to have internet connection for work, we were forced to use our abroad data pack, an extra (high) cost which was not planned.
Also we did not have enough towels when we arrived (we looked and found for ourselves extra towels) and there were no coffee capsules eventhough the description suggests there is a coffee machine. The nespresso machine exists though and Miriam made sure we get capsules the day after our arrival.
Overall if you don’t require working internet connection, this is a good value for money place to stay in Madrid.