For more than two decades, the interior designer Sheila Bridges, a creative beacon for Bill Clinton, Tom Clancy and Sean (Diddy) Combs, the hip-hop mogul currently known as Love, has divided her time between Harlem and the Hudson Valley. Most of those years, Ms. Bridges, 57, retreated to an antique farmhouse in the town of Germantown in Columbia County, where she kept horses, sheep, goats and chickens. But in 2019, she moved into a 1,600-square-foot village house near Hudson, N.Y., that was built for her from scratch. (Since 2015, she has also maintained a small residence in Reykjavik, Iceland.) Speaking from her weekend property, she talked about designing to please the ultimate client: herself. (This interview was edited for length and clarity.)