We very much enjoyed our stay at Duchy House. The room was clean and just as described and the staff were incredibly courteous and helpful during our stay. We were happy that our room faced the inner courtyard as there was roadwork happening overnight on the street adjacent and we weren't bothered by it at all.
The room was a bit warm as the windows don't open very far, but we had access to a fan that kept it quite comfortable during the night. Note that the bathroom lights are on a timer and go off/on automatically.
We felt that our stay was excellent value and would definitely return!