If you choose to vacation at a 4-star hotel in Arcadia, you'll usually find lots of amenities to make sure you're relaxed, such as a gym, pool and restaurant. You can experience excellent service and upmarket accommodations. Opt for a 5-star hotel and you'll get a few extra bells and whistles — think concierge assistance, on-site spas and nightly turndown services. You're likely to get additional amenities and exclusive services at a 5-star stay, though both are terrific options for luxury travelers.