Apartment C3 at 41-25 44th Street sits on a quiet, tree-lined block in Sunnyside, Queens, the kind of street where the sycamores arch overhead like an old-world canopy and neighbors still nod good morning. The building, a sturdy, unpretentious co-op with an elevator and laundry room, rises three stories above the sidewalk, humming softly with the sound of daily life. Perfectly situated on the thir...