A ONCE IN A LIFETIME opportunity to live in a home which could be featured in ARCHITECTURAL DIGEST while enjoying a low tax rate.    Large and bright open spaces with character throughout.  The owners have spared no expense in their complete and thoughtful renovation of this antique.  Moldings, bead board, dark wood floors and beautiful and neutral colors make this a truly showcase property.  Enter through a spacious mudroom into a large eat-in gourmet kitchen with granite countertops, sub zero refrigerator and large island.  Pass by the study made private by a sliding Farnsworth wood door.  Meander into the sitting room with wet bar opening into a spacious dining room.  Enjoy a large vaulted family room with fireplace and new carpet.   The second floor boasts two large bedrooms, full bath and playroom. The large master suite is just a few steps up on the third floor. 3 car heated garage.  Enjoy outdoor living in a beautiful large yard with gorgeous hardscaping.  Do not miss this one!