If you decide to vacation at a 4-star hotel in Petersburg, you'll typically find plenty of conveniences to ensure you're comfortable, such as a pool, restaurant and gym. You can look forward to top-quality service and upmarket accommodations. Go for a 5-star hotel and you'll get a few more perks — think on-site spas, around-the-clock concierge and indulgent turndown services. You'll most likely get extra amenities and first-rate services at a 5-star retreat, but both are terrific options for luxury guests.