The big difference between a 3- and 4-star hotel in Zelenodolsk is the standard of service and access to creature comforts. Three-star hotels are typically more affordable and come with the services and conveniences you need to be comfortable, such as a gym, WiFi and breakfast. You can count on a little more at a 4-star hotel — think upscale interiors, deluxe toiletries and extras like on-site spas.