One consistent note of disappointment, however, was the strong odor of smoke that lingered throughout the property. On-site features like the outdoor pool and the well-equipped fitness center win favor with guests, and gaming in the 70,000-square-foot casino doesn't disappoint, either. Beyond the beds, guests also rave about the stellar service they encountered at IP, as well as the abundant food choices available at the resort's seven dining establishments, including two AAA Four Diamond Award-winning fine dining restaurants. If they have their choice, they'd take the king-sized (found in all the suites and optional in the deluxe rooms), but the queens are also well-liked. Several describe the mattresses as some of the best they've slept on in a hotel. The comfortable beds are often guests' deciding factor on whether to return to Biloxi's IP Casino Resort Spa.