BELLAGIO, Italy — The latest addition to the scene here is a feisty, flashy, and thumping one: The Lido (www.lidodibellagio.com/index_eng.html), a beach club by day and a fabulous and groovy Euro-trash convening place into the wee hours. The parade of impossibly stylish Italians starts marching over from the ferry dock on Lake Como at 1 a.m., when the party is just getting started. A typical cover is about $26, a justifiable splurge to watch the class of people stepping off the big power boats tied up just a few steps from the dance floor. Midweek nights feature delightfully cheesy cover bands of Pink Floyd and the like. If you have the stamina, bracket a visit with a stroll through the Villa Melzi gardens (www.giardinidivillamelzi.it/html/menu_-_eng.html) to the adjacent hamlet of Loppia for dinner at Ristorante Alle d’Arsenne (www.ristorantedarsenediloppia.com/en/home.html), a favorite of nearby resident George Clooney ( no, really). Then crash at the exquisitely restored Grand Hotel Villa Serbelloni (www.villaserbelloni.com), where a dive in the lakeside pool is just the thing for the morning after.