María Jesús’s place is well located, 5-10 minutes walking distance to metro station and from there you are connected to anywhere in Madrid by metro.
María Jesús and Carlos made us feel at home and provided help as much as they could. It's was also an excellent learning experience at the same time, as I spoke only a bit of Spanish and they didn't speak a lot of English, but I like this experience. I highly recommend it if you are planning on visiting Madrid.