Speaking in 2009, John Cleese said of this very memo, "It just shows you people have no idea what they are doing."
Transcript follows. Enormous thanks to Sam Ward for providing the image.

Transcript
From: Comedy Script Editor, Light Entertainment, Television
Room No. & Building: 4009 TC
Tel. Ext.: 2900
date: 29.5.1974.
Subject: "FAWLTY TOWERS" BY JOHN CLEESE & CONNIE BOOTH
To: H.C.L.E.
I'm afraid I thought this one as dire as its title.
It's a kind of "Prince of Denmark" of the hotel world. A collection of cliches and stock characters which I can't see being anything but a disaster.
(Signed, 'I.M.')
(Ian Main)
CF