For this timeworn beach cabin renovation, we were charged, along with interior designer Rocky Rochon and architect Stephen Sullivan, with keeping the design raw with rustic finishes and vintage finds. The team instantly saw potential in this 900-square-foot guesthouse. After the much needed roof repairs, the team replaced the walls and windows and stripped the existing linoleum flooring, exposing the concrete underneath. The kitchen retained its original upper cabinets, though they got a coat of green paint, as well as its vintage window. Everything else -- the marble, butcher block, and perforated nickel screened cabinet doors -- is new.