From here you have easy access to the Guest Room under the Pyramid.

From there it is possible to get to the Aquarium.

“He was on the point of retiring from his parlour to the bedroon when  he proceeded to make his usual survey of the premises; he first stopped to look as a matter of course, under one of the sofas, and had partly lifted up the covering for that purpose when to his no small astonishment, he imagined he beheld a well shaped leg and thigh of a man.”