Despite not speaking English, Fernada was very communicative using the Airbnb app. She was very nice and accommodating to me and even helped me out when I left a salad and my water bottle in her fridge and was easily able to pick it up.
It is in a great location, with just a quick walk to to the metro.
If WiFi was available, it would be a perfect place. If you are looking for a place in the heart of Madrid, I recommend it.