It is hard for me to help speaking from inside knowledge.
"Dear Mr.Carr, "You ask me to give you my impression of Mr.Hamilton, in writing.
What your motive is I can't conceive, as he was not a person I took much interest in, though I know that some people do.

Unless, perhaps, you mean to put him into a book.
"I met him at a country house in Shropshire.

He came down rather late for breakfast, and when he was asked how he was, he quoted something about 'being apt to be rather fatigued with his night's rest.' I remember it very clearly, because it struck me as being so pointless at the time.

He went out shooting most of the day, and I think, as far as I can remember, he was a good shot.

He smoked a fearful amount, 'all the time,' in fact; they were always attacking him for that.