Teresa was a very welcoming host and her place is clean and has everything you need and, most importantly for a winter visitor, was nice and warm when Madrid was freezing outside! Best of all, it is within view of Atocha Station and the bus from the airport goes to the station as well. You can get anywhere you want from Teresa's place as long as it is on the metro/train line/bus routes. It really is a great location to launch from each morning. I had a great time. Teresa's English was better than my Spanish, and we managed to communicate effectively for what was needed. I can totally recommend Teresa's place if your aim is to see as much of Madrid as you can.