I was arrived to the hotel late night but the receptionist says I can't enter because we don't have passports and they can't accept driver licenses. In addition, they requires passport for each guest. That was very strange, because usually driver license or 1 passport is enough for the person booking the room. This is true for any city in Russia, not St-Petersburg only - know it by my own experience. The additional thing - whole conversation was ... (a little) below common politeness standards. It looks like staff only cares about himself (I can't let you in because I afraid of ... -- receptionist) and absolutely don't care about the guests.
By the way, while I wait on the reception (after I walk back to the office, get passports and come back) somebody come diown and says there is no light on the floor... May be that person did not know there are moving sensors, may be not - i did not check...
I've take standard room, which was ... ok just to fall asleep, wake up early and go out. Very simple, very basic quality. And TV with broken remote control...