The  Private GG  is not a subtle vessel—but then again, neither is the man it is named after. Built in 2022 by Italian shipyard CRN and measuring 170 feet long, the yacht was designed by Omega Architects, with a sleek interior by Massari Design, according to Yacht Buyer . She accommodates up to 10 guests across five staterooms, along with nine crew members, and comes equipped with a jacuzzi on the sun deck, an upper-deck cinema saloon, and a beach club with a steam room at water level. The boat belongs to Giancarlo Giammetti, the cofounder of the Valentino fashion house and the decades-long business and romantic partner of Valentino Garavani, the iconic Italian couturier who died in January at age 93.…