We didn't meet Charles in person, but her sister Gisela. We could leave our luggage even if we arrived before the check-in time and she explained us everything about the flat. It's perfectly located, within walking distance to almost any place that is worth seeing in Madrid. The room is not big, but exactly as it is in the picture, and it was ok for me and my 12-year-old niece, as we didn't spend a lot of time there.