Alessandra was really friendly, she helped us carry our luggage from the bottom floor, and if considering that you have heavy luggage the appts location on the 4-th floor should be the only obstacle for you not to take this appt.
Really lovely and full of history appt, If I have a chance of comming back to Madrid, I will definitely stay there!
The appt is located in the center- really, you can't live better then that!