I enjoyed Captain Wentworth's Diary a great deal. It is a retelling of Jane Austen's Persuasion from Captain Wentworth's point of view. The language and the plot developments matched Jane Austen's style perfectly. Real passages from Persuasion were inserted appropriately. I will definitely be reading some of the author's other Diary books written from the viewpoint of Austen heroes.
If you are a fan of Jane Austen and are on the lookout for similar books, I recommend Captain Wentworth's Diary.