When two large apartments were combined in a landmark Manhattan building not long ago, the merger created a magnificent space of Edwardian proportions. While grand and formal for entertaining, the owner’s wife required rooms that were also cozy and child-friendly. The apartment’s plaster ceilings and walls were restored, painter’s canvas affixed, and pale, mottled glazes applied throughout to provide a base for highly decorative painting and stenciling. The effort has had a warming effect on the vast, new apartment. Meanwhile, in the elaborate dining room (above), and in other rooms in the apartment, layers of old paint were painstakingly removed from the mahogany woodwork and the surfaces were then French polished.