Drawing 98 was exhibited at the Royal Academy in 1798 (cat. 960). The drawing shows a perspective of the entrance hall, as in drawing 97, and plans of the first and ground floors. The drawing employs a trompe l'oeil effect of scrolling paper for the plans and sans serif capitals for the labelling.

The entrance hall has four Greek columns (2/3 fluted) supporting full entablatures, from which spring four shallow segmental arches decorated with a motif derived from a Greek fret pattern. The arches support a groin vault that reaches 21 feet 6 inches at its crown. The cornice of the entablature continues around the periphery of the entrance hall and tribune, with modillions included. The walls are rusticated, with a frieze ornamented in coats of arms. The chimney-piece is a simple incised line ornament on a Greek key motif similar to the spandrels overhead. The perspective looks towards the drawing room. The drawing room's door is surmounted by a sculptural relief panel depicting figures and winged figures. A fluted pendentive dome surrounds the tribune on the ground floor.