The location is great, near plaza Mayor and metro stations.
We came early in the morning and Marco arranged a very early check-in, which helped us a lot since we were travelling over night.
The apartment has everything you need, including a washer and dryer.
The main issue was that the apartment was on the 4th floor without an elevator and the bedroom was a little too small (because it's the attic, we hit our heads a couple of times).