Cary Grant scored still another box-office smash with his 1958 vehicle Houseboat. Grant plays a widowed father who packs himself and his spoiled kiddies off to a ramshackle houseboat. Enter Sophia Loren, who is attempting to break loose from her tyrannical father's (Eduardo Cianelli) iron grip. She hires on as Grant's housekeeper and his children's governess. Though Grant struggles valiantly to maintain a "hands off" policy, he and Loren are billing and cooing by fadeout time--but not before plenty of reversals, recriminations and sitcom-style mishaps. As a bonus, the kids end up behaving like little angels (not surprising, since Loren has threatened from time to time to turn them into genuine angels if they don't toe the line). According to most sources, the on-screen romance between Cary Grant and Sophia Loren in Houseboat spilled over into their private lives as well, though Sophia put an end to this dalliance when she married Italian movie mogul Carlo Ponti.
~ Hal Erickson, All Movie Guide