If you choose to stay at a 4-star hotel in Pimlico, you'll usually find lots of conveniences to keep you relaxed, such as a restaurant, gym and pool. You can enjoy excellent service and upscale accommodations. Pick a 5-star hotel and you'll have access to a few more bells and whistles — think around-the-clock concierge, on-site spas and nightly turndown services. You're likely to get more amenities and exclusive services at a 5-star stay, though both are superb options for luxury travelers.