Sometimes you just are not in the mood for trendy. Sometimes you simply want delicious food, service that is solicitous but not in the way, a pretty but not splashy dining room, and tables set enough apart to allow for private conversation. La Chaumiere is the answer. A “grown-up” restaurant in Georgetown that’s been around for over 40 years, it pleases with its French country decor, its white tablecloth-covered tables, and rush-bottom chairs arranged around the large center hearth, where a fire crackles in winter. Le Chaumiere’s menu is a joy for lovers of French classics, like French onion soup, lobster bisque, steak au poivre, and St. Jacques a la Provençale (sea scallops with garlic and tomatoes). The clientele usually skews older, but young couples, families, and business people are among the grateful patrons, too.