MGM Grand Hotel & Casino is the largest hotel in Las Vegas, and it's had a recent top-to-toe makeover resulting in a vibrant, sexy color scheme and cutting edge technological perks. Rooms in their four 30-story towers come at several price points, from reasonable to extravagant, with the most expensive being the Skylofts, ultra-luxe suites that come with a chauffeur-driven Mercedes, butler service, and VIP treatment at top restaurants. There's also a floor of "Stay Well" rooms, offering Vitamin C-infused showers, sunrise alarm clocks, and HEPA air-filtration systems. The casino floor has new machines and tables, and celebrity favorite Hakkasan nightclub is on hand for late-night partiers.