Location, across from subway station. Only one stop from Chamartin train station. A supermarket is very close to it. Liked the fast food restaurants on the subway station, very convenient for a quick breakfast or dinner.
Convenience for business meetings
Great location, metro station is near. Rooms were clean. Some members of the staff were not that friendly and helpfull. Airconditioning was not on though the days were quite warm.
The location of the hotel. It was closed to a metro station as well as a railroad station, making traveling around Madrid very easy.
Late at night there were large groups of teenagers drinking just outside the hotel (botellon). That happened every other day, no problem for us though.