Nabbing a free night at any hotel can be a great deal. Nabbing a free night at a luxury hotel is arguably better, because those per-night savings can run into the hundreds of dollars. Take the Four Seasons Resort Palm Beach, a bastion of understated luxury located on a quiet expanse of beach in one of Florida's toniest communities.

For stays through April 3, the resort is running a  Stay Longer,Third Night Free offer that translates to a 33% discount on a three-night stay in an ocean-view room.  With this offer, a three-night stay in an ocean-view room with two double beds (normally $679 a night) will cost $1,358 instead of $2,037. If you're up for a splurge, this is a fantastic way to get it for less. Want even more good news? There is no limit to the number of free nights you can get. Book a six-night stay, and you'll get two nights free—still a 33% discount, with savings potentially reaching four digits.

The resort's 210 guest rooms boast private balconies and marble bathrooms. The pool is staffed by attendants at the ready with towels, lemon water, popsicles, chilled face cloths, Evian spritz and fresh-cut fruit.  There’s an 11,000-square-foot spa and tennis courts—not to mention a multilingual concierge who can arrange for you to go deep sea fishing, sailing, snorkeling or horseback riding on the beach. Does it sound like you'll be reaching into your wallet all day? Not true. Four Seasons offers an impressive line-up of complimentary services and activities, including a 24-hour fitness facility, yoga classes, full-day children’s program, and dining for kids ages 5 and under in The Ocean Bistro. For the duration of the third-night-free offer, the resort is hosting special “spring break” activities, including baseball-themed evenings with ballpark fare and baseball-related games and entertainment.  The sports theme continues on the weekends with supervised, family-friendly games on the beach such as flag football, ring toss and softball.