Excursion bureaus offer guided tours in Italian. If there is a demand, then in German and English. You can get a group excursion in Russian only by making an order with the host Russian tourists of the travel company. Their main business is hotel booking and, as an accompanying service, booking of transfers and excursions.

You can book an individual guide in Venice - find their offers of your services via the Internet.

If you rent a car, then to get to Venice and back will not be difficult.