I enjoyed this beautiful and unique property more than my friends did. The Castle is old; the building itself is beautiful and the room we stayed in (the big one) was incredible. Unfortunately the power went out multiple times every day and we often lost hot water, which was probably outside the hotel's control, but inconvenient because it's so hot there in the summer.
I would stay here again just for the experience; the property is absolutely beautiful inside, the rooms and the common areas. If you don't like steps, I wouldn't advise it. The two things I didn't love were the people constantly walking through the 'private' terrace (it's not private, really, there are apartments it connects to) and the breakfast room is very small and cramped. That said, for the cost and the very good communication, I would still stay again.