My boyfriend and I stayed in Andrei and Sasha's New Holland apartment in August, stopping by for a few nights either side of a trip to Lake Onega.
The apartment was lovely, comfortable and beautifully decorated, and even though Andrey and Sasha were not staying there at the time it was a great way for us to meet other travellers (all Russian while we were there) while still having plenty of space and privacy of our own.
Andrei and Sasha were extremely laid back and flexible and accommodated our unsociable arrival times without complaint! They offered plenty of great advice and they generously provide complimentary vodka alongside the usual coffee and tea.
The kitchen facilities were also fantastic which allowed us cook many of our meals, saving money for some memorable champagne and caviar dinners out.
I would definitely recommend their homestay as a brilliant base for exploring St. Petersburg.