Several inns in Northern California’s Mendocino County are offering free nights and other perks during the March and April whale-watching season. For example, Dennen’s Victorian Farmhouse, a B&B in Little River, has a third-night-free offer during the town’s whale festival, March 11-14. Rooms start at $188 per night double, including taxes and full breakfast; for a three-night stay, the rate is $125 a night. Guests who stay for only two nights receive a pair of whale-watching tickets (valued at $80) through April. Offers are not combinable, and you must mention the Whale Watchers Delight deal when reserving. Info on Dennen’s: 800-264-4723, www.victorianfarmhouse.com.