Laura was a great help. She met me late in the day when my train from Barcelona arrived and she was very helpful to provide me directions and the Metro stop closest to the apartment, which is Tribunal Station only six stops from Atocha Renfe station on the light blue #1 line. She also provided a subway map, a map with a list of local bars and restaurants and also a bottle of red wine. The apartment is located on the 4th floor of a walk up and its a room comfortable for 1 to 2 people. It was 95 degrees while I was there and the flat has great air conditioning if needed. It worked so well that Im glad Laura showed me where thr extra blanket was.
The flat is located in an amazing trendy neighborhood with in walking distance to plaza sol and plaza mayor or just 2 stops via the Metro. If you plan on being in Madrid for 3 or more days I'd recommend to buy the 10 pass Metro for 12 euros. It is extremely easy system to navigate and it runs till 1:30am every day and comes every 3-5 minutes during the day.
The next time I come back to Madrid I would stay here again. It is extremely clean, well situated and Laura is a fantastic host. She was always in communication with me before and during my stay.