The location is really amazing: you have to walk less than a minute to be in Plaza Mayor and there is no major attraction in Madrid that cannot be reached in a walking distance. The apartment itself has all the necessary tools to be there for a few days (the kitchen is well equipped) and Roque is a great host. If you want to eat in the neighborhood, avoid the restaurants in Plaza Mayor (they charge a lot for ordinay food) and give a chance to those located in places such as Calle Atocha (between Tirso de Molina and Anton Martín stations) and especially Plaza de Santa Ana.