Some visitors might be annoyed at being reminded that One Must Not Speak!
In order to really enter into the spirit of the journey the visit must be experienced in complete silence - very difficult when one comes across the real live cat sleeping in the window upstairs, which inevitably brings forth various "Oooh"s and "Aaaah"s.
There are even a few notices pinned up here and there asking visitors to be silent and 'just look'. Even the explanatory leaflet warns us that the experience mustn't be seen as merely 'ideal for visiting tourists or bored company directors' wives'.
Pretentious? Discriminatory? Well, maybe. But at the end of the day it's advisable not to take offence (especially if you are a company director's wife or a tourist) but just to immerse oneself in the completely delightful, challenging and moving experience that is Dennis Severs' House.