The principal difference between a 3- and 4-star hotel in Princeton will be the level of service and access to creature comforts. Three-star hotels are typically lower priced and offer the conveniences and services you need to ensure your comfort, such as breakfast, a gym and WiFi. You can count on a little bit more at a 4-star hotel — think upscale furnishings, premium toiletries and perks like spa and wellness centres.