Hotel St. Petersburg Karlovy Vary ***. The Saint Petersburg is located in a historic part of the city (it sits across from The Grand Hotel Pupp), near mineral springs. All historical, cultural and popular points of interest fall within close proximity of the hotel. Stays in two-room rooms and apartments correspond to category III. To simplify all of the administrative tasks during your holiday, the hotel invites you to make use of the currency exchange desk as well as a whole host of other services including transportation.