We consider dining and drinking a true art form. Turns out, the folks over at the Royal Sonesta Hotel (40 Edwin Land Boulevard, Cambridge, 617.806.4122) do, too. Their recently opened ArtBar is a treat for the senses — a restaurant with a combination of small plates and larger plates to share (pan-seared sea scallops and roasted native striped bass are examples of the seasonal offerings), an extensive wine list, specialty cocktails, and a feast of artwork from the hotel’s collection adorning the walls. And did we mention there’s a patio with views of the Charles open daily for lunch? First the Royal Sonesta brought us the culinary gem that is Dante; now this. They just keep raising the bar.