Why in the world would a noble retainer barge into a room of another noble without knocking? Even more so, in a rich hotel the owner would knock first and introduce you to the person in question (cause letting suspicious people in without introduction can cause problems)
In middle ages, barging into a noble ladys room who is the head of a noble family is grounds for execution of all commonors involved to protect her dignity. That means the retainer, the inn owner, the passerbys who witnesed it and even the inns staff as a whole might be implicated.