Lidia helped us—me and my wife—in the last minute emergency: answered really fast and hosted us as soon as she could.
The room was warm when we arrived, we had a separate bathroom, towels and bedspreads ready.
We also were allowed to use kitchen and all the supplies it included. So it was a very pleasant stay. Thanks Lidia, we highly recommend Lidia for a stay during your trip in Madrid.
There's only one disadvantage, the apartment is located at the last station of line 1 of the metro. But it's not that bad, keeping in mind all the bonuses you get.