The big difference between a 3- and 4-star hotel in Ciudad Serdán is the standard of service and availability of creature comforts. Three-star hotels are generally more economical and provide the amenities and services you need to be comfy, such as a gym, WiFi and breakfast. You can expect a bit more at a 4-star hotel — think upmarket furnishings, deluxe toiletries and extra touches like spa centers.