Here are a few photos to show you how it happens, with the floating platform being pushed by a motor boat. The cost of this adventure across the river is ~5000 roubles ($70) per crossing. more >>
Insider info from Julia Solntseva, a local expert and a publisher of a variety of travel guides: Call 8 911 344 2772 or 8 921 281 7152 about guesthouses in Kuzomen, Chavanga, Pyalitsa, or Strelna. Or write to email@example.com, Svetlana.
Here is a map clearly showing these somewhat obscure locations: