Casamara Rooftop serves small Mediterranean bites. | Birch Thomas A trifecta of debonair Dupont dining destinations is running on all cylinders one year in. The Sixty DC hotel includes retro cocktail den Reynold’s and sceney, Montauk Surf Lodge-aspiring Casamara Rooftop. And then there’s moody Mediterranean restaurant Casamara, elegantly sprawled across a marble checkered floor off the lobby. Chef Matt Crowley’s menu above and below sails seamlessly around the coasts of Spain, France, Italy, and Greece. He uses local produce and his fine dining background (Komi, Jean-Georges) to lure in a crowd. All three were assembled by Toronto’s hot-spot hitmaker Hanif Harji, who’s proving that outside operators new to town can, in fact, nail the landing if done right; the boutique hotel comes from hospitality magnate Jason Pomeranc, whose bi-coastal Sixty brand exists in NYC and Los Angeles. Here’s what to order at its latest edition in D.C. What to order Start with the square-shaped focaccia. The dimpled starter ($14) switches up its ingredients with the season. Keep the cultured butter and olive oil coming.  Grilled branzino ($49) takes tips from a taverna by the sea, simply served with olive oil, lemon, and capers, allowing the fish to take center stage. Best-sellers since day one include grilled sardines on sourdough and truffle bucatini cacio e pepe. My new favorite pasta party here, however, is the basil-y bowl of rigatoni and spicy ’nduja sausage encased in pomodoro sauce ($29). Pack in prime tomato time while you can with a bright heirloom salad ($24) served on scalloped plateware. Wasabi helps cut the sweetness of the accompanying summer strawberries alongside aged feta, basil, and white balsamic. The meat and poultry section is short but strong, and its popular harissa chicken hasn’t budged since opening. The juicy, 12-ounce strip loin ($60), married with mushroom-onion jus and green peppercorns, gets topped with a big pat of decadent bone marrow butter, which only upped the steak’s melt-in-your-mouth factor. What to drink Cocktails ($17 to $20) follow the lead of the Mediterranean menu; the pisco punch, for instance, arrives with an adorable bite of manchego. The potent Aegean Nights espresso martini nods to after-dark Grecian cafes, featuring on-trend reposado tequila versus vodka and an extra kick from Dolin dry vermouth. The sambuca cream float was on the aggressive side for such a small coupe, however.  Up on its rooftop counterpart, generous spritzes play with transportive ingredients like saffron, chile dust, and rose petals. For table water, big blue glass vessels shaped like a scaly fish feel resort-y. The vibe A plush, 54-foot tapestry depicting a lush landscape was hand-tufted in Spain and took many moons to make it to its final destination, now stretched across the dining room.  An oval-shaped marble bar planted in the center is surrounded by comfortable chartreuse chairs, making it easy to mingle with your neighbor next to you or across the way.  The curved, glowing-white staircase right outside the restaurant is selfie central while you wait for the elevator up to its see-and-be-seen sibling. Insider tip Casamara swings on the pricey side — it is a hotel restaurant, after all — and the bill for our table of seven neared $1,000 (we probably over-ordered, to be fair). For a cheaper tab, check out its solid Restaurant Week deal later this month (three courses for $65, plus a side). Or do daily happy hour at Reynold’s (4 to 6 p.m.), when blue cheese-washed martinis are just $10.  ...read more read less