GREAT STAY! Carlos and Frank have an apartment in a great and safe location. Groceries, metro and places to eat are within a 10 min walking radius. The apartment itself is a perfect size for travelers and really provides the basic amenities that you would need. Unfortunately, the time we went to Madrid the weather was hot and the room would get very hot during nighttime even with the fan provided. So it is safe to say the room should be cooler during times of better weather. Other than the wifi being spotty and sometimes not connecting, it was a great stay and great location.