Your route .
Vienna — 1 night stay
Arrive in Vienna airport. Get transferred to your hotel..
Train ride to Prague
Prague — 3 nights stay
Checkout of your hotel. Take your train from Vienna to Prague. Check-in to your new hotel.
Hop on Hop Off 24 hours and Canal Cruise.
Cesky Krumlov Day Trip from Prague.
Take your flight back to India. Hope you end up with a lot of memories and a few souvenirs too..