Maybe it's baby-boomer nostalgia that makes Maison Carlos seem so comforting. The place is decidedly old-fashioned in its tastes, exuding a worldly, early-'60s-era charm that was always more mirage than reality (Dean Martin really was a bastard, and those Playtex girdles were freaking uncomfortable). The lavishly gilt-framed marine paintings by Nantucket artist Robert Stark say it all: You're as far from the cutting edge as you're likely to get, at least on this side of the bridge. At Maison Carlos, somebody still believes in romantic, windswept seascapes; in vichyssoise (this faultlessly executed classic, $6.50, is prepared without the faintest whisper of innovation); in waiters who do not speak unless spoken to; in smoky-voiced jazz singers. That the owners, cast, and crew of Maison Carlos are all in their 30s or younger makes the experience of dining here even weirder. What's up with these cats? Oysters Rockefeller, for god's sake? Somehow, though, it all works beautifully. Settled back with your plate of crispy fried zucchini, sliced white bread with a dish of sweet butter, and a cold martini, you could be 8 years old again, having dinner with Mummy at the club (yes, our Mummy let us drink martinis). Start with the oysters ($11.50), follow with caesar salad ($7.50), and a plate of steak au poivre ($25.95) or spaghetti with jumbo lump crabmeat ($19.95). Then give Tippi Hedren a call and see if she'd like to join you for a stinger. They won't have to ask you how to make one.