In the living room of her family’s Upper East Side apartment, Astrid Hill, founder of Monticule Art Advisory, installed a Sarah Crowner canvas above the fireplace, while works by Lauren Quin (center) and Mark Grotjahn hang near a Nathaniel Rackowe sculpture. Designer Frank de Biasi furnished the space with a sofa and armchairs by Maison Carlhian that he upholstered in a fabric of his own design, grouping them with a Jacques Adnet daybed around a cocktail table by Gloria Cortina. The custom rug is by Doug and Gene Meyer for Holland & Sherry.

Astrid Hill stands with her dog, Modi, by the living room’s Charles X–style marble fireplace.

A Nathalie Ziegler chandelier is mounted above the dining room’s midcentury Scandinavian table and chairs, a Donald Baechler work hangs next to the shelves, and a painting by Ruby Sky Stiler is displayed above a Johanna Grawunder console for Glas Italia.

In the library, a geometric abstraction by Sarah Crowner and a painting by Jo Messer are displayed atop panels made of a Le Manach fabric; Dutruc Rosset lighting sconces are mounted above the sofa, which was designed by de Biasi and is covered in a Manufacture Royale Bonvallet mohair velvet.

De Biasi devised custom cabinetry for the kitchen and designed geometric tiles for the floor; the light fixture above the island is by Woka Lamps Vienna.

He created a breakfast nook with a custom banquette and table, joined by Maison Drucker chairs; the pendant is a Paris flea market find, and the artwork is by Erin O’Keefe.

Hanging above a Carlo de Carli chest of drawers in the primary bedroom, an artwork by Susan Hill pops against the glazed plaster finish by Asterisk Designs.

A Sarah Crowner painting overlooks the bed and Swedish Gustavian stools at its foot, which are family heirlooms. The bamboo shades are by Windochine, the curtains are made of a Lao Textiles silk, and the carpet is by Patterson Flynn.