sentences:  The grand central room thus enclosed is frescoed with trompe-l'oeil niches, columns, balustrades, and flanked by symmetrically arranged smaller and lower barrel-vaulted rooms that are linked by generous arched openings.Thus, there is an articulated central reception space in the form of a Greek cross.The vestibules give onto more intimate spaces, in a series of cubes, double cubes and "golden mean" rectangles characteristic of cinquecento villa floor plans.