You may think you come home every night to a cramped studio apartment, but as far as your friends and relatives back home are concerned, it’s a cozy bed-and-breakfast. If you’d rather not play host, but feel guilty sending your loved ones to an exorbitant midtown hotel, Arthur Frommer, publisher of the Frommer’s travel books and the undisputed master of budget travel, recommends the Chelsea Star, a funky, twenty-room hotel near Madison Square Garden (300 West 30th Street; 212-244-7827). “It has real flair. You don’t even feel like you’re in a hotel,” he says. And at less than $100 a night it certainly doesn’t cost as much.