NYC Mayor Zohran Mamdani’s hand-picked candidate for a City Council seat representing Greenwich Village is proving that socialism looks a whole lot better from  a $6 million Westchester manor and a $3.7 million Chelsea condo, critics told The Post. Lindsey Boylan — a former senior aide to ex-Gov. Andrew Cuomo who was the first woman to publicly accuse him of sexual harassment — joined Mamdani as a member of the Democratic Socialists of America last year while campaigning to help him defeat her ex-boss. Cuomo has denied any wrongdoing. Lindsey Boylan and husband Lee Roy Kim live in a $6 million Bedford, NY, home. Astrid Stawiarz Boylan is married to investment banker LeRoy Kim, and lives with him and their daughter in a lush five-bedroom home in ritzy Bedford, NY. During a Bedford zoning board of appeals meeting in December, Boylan whined about spending “thousands of dollars a month on landscaping” alone for the pristine property while seeking approval for a new deck.…