For Visiting Parents: Birreria at Eataly
For a bit more sophistication than your average Biergarten, head to the roof of Eataly to Birreria. During the winter months, a glass enclosure keeps guests warm while still offering a great view of the city. The star beers here are house brewed in casks, which means they are unfiltered and unpasteurized. Instead of a tap, they are poured via a hand pump, which is the traditional, old fashioned way of brewing beer. If that's not your thing, there's plenty of bottles and drafts available.
Munch on a selection of cheese and salami, or if you're really hungry there's skirt steak, grilled lamb chops, and a variety of sausages (in true Biergarten fashion).