Strictly speaking, the Potomac River is not Il Mare, but as the watery view for one of the trendiest and certainly one of the finest seafood restaurants in D.C., the river certainly will do. Fiola Mare’s stiffest competition comes from its own siblings, Fiola in the Penn Quarter and Del Mar at the Wharf in the Southwest Waterfront. Sit at one of the many outdoor balcony tables and you’ll be gazing out at Roosevelt Island, Key Bridge, and a slice of Georgetown’s waterfront to your right, and the Watergate apartments and the Kennedy Center to your left. Great views are also available within. The sprawling modern interior has a front bar and a back bar, and more than one dining area in between. The quietly proficient staff serve up a slate of specialty cocktails, like the standout Bellini. Fabio Trabocchi shines in his mastery of Italian seafood (for Spanish takes on seafood, head to Del Mar). A recent dinner started with a generous portion of top-grade tuna tartare, graced with a hint of tomato essence, followed by a too-generous portion of poached Alaskan halibut with Ossetia caviar and succulent oysters. Also done to perfection was a bowl of lobster ravioli in a simple, herb-scented lobster broth, together with a fresh, juicy lobster claw and tail. End with the bombolini: half a dozen ricotta doughnuts dusted with sugar, complemented by a warm chocolate sauce and a generous portion of vanilla gelato bearing chocolate crunches.