In Chelsea, a hotel needs to offer a certain level of high-end amenities to earn 5 stars. These may include saunas and spas, on-site gyms, gourmet restaurants, complimentary luxury toiletries, premium bedding and more. What also sets 5-star hotels apart is their guest-focused standard of service. You'll enjoy things like concierge services, nightly turn-down services and in-room massage. Some may also offer thoughtful touches such as a welcome gift.