Renato Apartment is a private section within Leonardo's home. We had complete privacy at all times but sometimes crossed paths with Leonardo for a chat, which was lovely.
The apartment is as advertised, and we enjoyed the ambience provided by Leonardo's artwork and decor touches - nicely old world.
Mapping in Venice is always difficult as is reliable internet - research thoroughly and print your own research. A commercial map will be of limited use.
Make your arrival arrangements a day or two in advance as Leonardo's activities can leave him uncontactable for the whole day.