I could go out and count all of them but maybe better start from here
ASTORIA
Astoria Hotel is the member of the Rocco Forte Hotels chain
CORINTHIA NEVSKIJ PALACE HOTEL
GRAND HOTEL EMERALD
GRAND HOTEL EUROPE
GOLDEN GARDEN HOTEL
KEMPINSKI HOTEL MOIKA 22
RADISSON SAS ROYAL HOTEL
RENAISSANCE ST. PETERSBURG BALTIC HOTEL
SOKOS HOTEL PALACE BRIDGE
Book Hotel in St. Petersburg