They're like the Madonna Inn in San Luis Obispo on steroids. If you're a total high-roller, pay the mega-premium and get one of the 'fantasy suites' in the new tower. From there, you can upgrade to Palms Place, which has studio and multi-bedroom suites that are even swankier. Views can be incredible if you can see the Strip from this side of the interstate.
The towers are tall and skinny, and there are only a dozen or so rooms per floor, so you're never far from the elevator. The Superior rooms have Jacuzzi tubs (although bathrooms are still mediocre), better furnishings and nicer stereos, and are in the new 'Fantasy' tower. Bathrooms are unspectacular, and not up to the standard set by the newer strip joints. Rooms also include in-room safes, those way-overpriced mini-bar fridges, coffeemaker, hairdryer, iron and full-size ironing boards. 'Deluxe' (regular) rooms are larger than average at 440 square feet, but nowhere near as the luxury joints on the Strip.
The colors are the obligatory beige and earth tones, and the furniture has clean lines. The rooms have an upscale Palm Springs or Florida feel to them, like your grandparents' house if your grandparents were cool and had hip furniture.
