Decorated by Michael S. Smith for the Obamas, their White House’s private quarters were as worldly and relaxed as the family that called them home.

Photography: Michael Mundy | Author: Mayer Rus

The Treaty Room—filled with memorabilia including one of the President’s two Grammy Awards, family photos, and a personalized football—is where Mr. Obama often retreats late at night. He uses the room’s namesake table (far right), which has been in the White House since 1869, as a desk. George Catlin scenes of Native American life hang on walls covered in custom-stenciled Larsen abaca. Eighteen-fifties overmantel mirror; 1930s Hereke carpet

At the Treaty Room entrance, Sir Jacob Epstein’s 1946 bust of Winston Churchill stands on a circa-1810 New York card table.

Smith mellowed the Yellow Oval Room with smoky browns, greens, golds, and blues. The 1978 Camp David peace accords were signed at the antique Denis-Louis Ancellet desk in the foreground.

In the West Hall, Alma Thomas’s 1973 Sky Light hangs above a circa-1895 English mahogany pier table.

The Center Hall contains Peter Schlesinger urns (at rear, on pedestals) and paintings by Sam Francis (far right) and Hans Hofmann

In the master suite, Giorgio Morandi paintings meet a circa-1903 A. H. Davenport & Co. armchair.

The Family Dining Room.

Late-1960s Robert Mangold works hang on the Family Dining Room’s Jasper-fabric-covered walls. The circa-1800 sideboard hosts Christopher Spitzmiller ceramic lamps.

The Family Sitting Room contains a Sean Scully artwork, a Roman Thomas sofa, a Baker floor lamp, and a Jasper side table.

A view of the Family Sitting Room, with Glenn Ligon’s Black Like Me #2 (far right).

Works by Robert Rauschenberg (left) and Alma Thomas make a modern splash in the Old Family Dining Room. Curtain fabric by George Spencer Designs; Anni Albers–style carpet by Scott Group Studio.

Luncheon is served in the White House’s Old Family Dining Room.

The Solarium on the White House roof.

The master suite’s antique canopy bed is curtained with Larsen and Jasper fabrics and outfitted with Nancy Koltes bed linens. Mirrors and sofa fabric by Jasper.