I loved Germán's place's location! It's so central! You can't get anything better for that price at that location.
It's a modest flat, it's well equipped with everything for a short stay. There is no need to take the subway to the typical touristy places if you are staying in this flat.
I especially liked how the flat was decorated!
The shower handle needs to be fixed, but my friend and I made it work.
If you're planning a short trip to Madrid I would definitely recommend Germán's place!