Meyling was a polite, communicative host -- she had great recommendations for Madrid, and the apartment was in a fantastic neighborhood. The apartment itself was completely functional, but is a little bit smaller than the pictures indicate on the listing, especially for the bedroom. The building itself (including the staircase and hallway to the apartment) is also not nearly in as good shape as the apartment itself.
We would stay in this place again because of it's great neighborhood location, and proximity to everything we wanted to do and see in Madrid -- it's great jumping off point to explore the city.