Very friendly hosts!
Great location - lots of bars, small shops (and even 1 big supermarket) around. Very close to the underground station. Most of main Madrid attractions are in walking distance. The place is very centric, in the same time, not many tourists around.
The apartment is very clean, cosy and has everything needed for a comfort stay.
The only one thing - need to pay attention to the heater. It switched off automatically and it was a bit cold until we realized it and switched it back on.