Our stay in Daniel's flat was fantastic. We went to Madrid three friends for a couple of days. The location is fantastic since it is really close to the center and well communicated with public transport. We were coming by train from Barcelona and it was super easy to get there. Also the instructions we received from Daniel were very clear and easy to follow.
The flat was clean and ready when we got there. And we found the beds particularly comfortable.
I would really recommend picking this flat for a stay in Madrid.