at the same time , she undertook a refurbishing of the house , spending a fortune on new paint , plaster , draperies , and delicate expensive furniture in the art deco style the double parlor was crowded with potted palms as richard llewellyn has described a bozendorfer grand piano was purchased , an elevator was eventually installed ( 1927 ) , and before that an immense swimming pool was built to the rear of the lawn , and a cabana was built to the south side of the pool so that guests could shower and dress without bothering to go into the house .