Extraordinary setting notwithstanding, the dwelling felt dearly in need of designer Nina Freudenberger touch. “It was beautiful, but it didn’t have any personality,” she recalls. “We really had to layer it up a bit.” With the help of consulting architect Michele Hugo and contractors Sand & Sea Construction, the couple set to work maximizing the views and smoothing out the flow, expanding the footprint of the living room (removing a fireplace in the process) and updating the bathrooms and...