My fav hotels in Italy are :
Hotel Eden In Roma, fantastic service, amazing terrasse on the roof. fab restaurant .
In Venice : hotel San Clemente (an old monastere on private island with golf court , swiming pool , and spa . 10 mn from San Marco with the hotel's boat shuttle ) still in Venice : Hilton Molino Stucky. with a pool on the roof, fantastic view , sky bar ...
Hotel des Bains at the Lido of Venice, private beach , fantastic pool, a little old fashion but full of charm.
Milan, hotel principe di Savoia