Colonial Inn is located at 220 Sound Beach Ave, Old Greenwich, CT. This business specializes in Hotels & Lodging. Colonial Inn is open Mon, 11:05am-10pm ; Tue, 11:05am-10pm ; Wed, 11:05am-10pm ; Thu, 11:05am-10pm ; Fri, 11:05am-10pm ; Sat, 11:05am-10pm ; Sun, 11:05am-10pm. and accepts American Express, Cash, Discover, Mastercard and Visa.