On April 14, when the Grand Hotel Tremezzo reopened for the season, the 92-room Lake Como palace celebrated the completion of a three-year-long renovation. After its 100th birthday in 2010, the hotel embarked on the facelift, and in 2012 it showcased an entirely new floor with eight new suites. This year, Tremezzo’s Lake View Prestige rooms and Aurelia Suite are in the spotlight. New closets, flooring, furniture, linens, and Verona-marble bathrooms grace the Lake View Prestige rooms (from about $680), which st…