The big difference between a 3- and 4-star hotel in Southern Maryland will be the standard of service and availability of creature comforts. Three-star hotels are generally more wallet-friendly and provide the conveniences and services required to be comfy, such as breakfast, WiFi and a gym. You can count on a little more at a 4-star hotel — think upscale furnishings, luxury toiletries and perks like on-site spas.