The best way to get to Vosstaniya Square to Vasilyevsky Island is along the river Neva side, over the Palace bridge and via the Nevsky prospect.
https://www.russian.taxi/st-petersburg-news/taxi-from-vasilyevsky-to-vosstaniya

St Petersburg Taxi is a genuine English-speaking taxi company in Saint-Petersburg Russia. Airport Pulkovo transfer, station, port, city ride - get price and book now!

https://www.russian.taxi/