The historical center of St. Petersburg.
Within walking distance: the Hermitage, the Palace Square, St. Isaac's Cathedral, the Bronze Horseman, Rosta columns, the Spit of Vasilyevsky Island, the Peter and Paul Fortress, the Zoological Museum, the Kunstkamera and Nevsky Prospect.
If you decide to go to Petrodvorets, then the "Meteor" boats are located nearby on the embankment. 30 minutes of a boat trip around the Neva and the Gulf of Finland and you are in the Peterhof Palace and Park Ensemble.
Restaurants, cafes, clubs, shops.