The location is great, central but quiet, with the bedroom facing the inner courtyard.
The apartment has everything you need, and is the perfect size for a couple for a few days. There is a small welcome package with some instant coffee, cookies etc.
The apartment was very clean and it has hotel-quality sheets and towels.
The mattress is unfortunately dreadful. I had a tough time sleeping on it and woke up many times a night with body aches, it was so hard. Never experienced something like that. I had to sleep on top of the blanket to get something in between me and the mattress. That really compromised the quality of my stay. Maybe time for an upgrade there?
The view from the living room was great, but the windows could have used some cleaning to actually see the castle properly.
The walls between the Airbnb flat and the neighbors are very thin (perhaps because it used to be one big apartment and was converted to a duplex?) that you'll hear anything going on on the other side. A few times we thought someone was getting inside the apartment, but it was just the neighbors coming home or leaving the house.
Check out at 10 am is strict - even if there are no guests coming after you.