The apartment is a good size for 2 people. Check in was very easy and it was great to get some tips about where to go and how to travel during our stay on Madrid. The metro makes all parts of Madrid easily accessible from the apartment.
One thing to note is that the air on does not run during the night. It got very hot during the night and the fan did not really help to cool us.
We went for a day trip to Segovia which is a quick 30min train ride away from Madrid. We would thoroughly recommend anyone to do the same.