The key difference between a 3- and 4-star hotel in Protvino will be the quality of service and availability of creature comforts. Three-star hotels are typically more budget-friendly and offer the services and conveniences you need to ensure your comfort, such as breakfast, WiFi and a gym. You can expect a little bit more at a 4-star hotel — think upmarket décor, premium toiletries and extras like on-site spas.