Livia was always very fast in answering my questions and even though I had to postpone the hour of my arrival several times, it was no problem. She was not at home that weekend, but her husband was there to welcome me and explain me everything. He and his son were super nice. I got the keys to the house and the appartment door, so I could enter freely.
The room looks as on the pictures. It was clean and they provided a towel for me. I had shared the bathroom with them and were able to use the kitchen, even though I was not often at "home" during my weekend in Madrid.
Very nice hosts and they are multi-lingual :)