In Cambridge, a hotel must provide a certain amount of high-end amenities to be rated 5 stars. These may include on-site gyms, gourmet restaurants, saunas and spas, complimentary luxury toiletries, premium bedding and more. What also sets 5-star hotels apart is their outstanding service. You can expect things like nightly turn-down services, concierge services and in-room massages. Some may even offer extra touches such as a welcome gift.