This was a very expensive 'Exclusive' tour, but worth every penny. It took in the Colosseum, the Trevi Fountain, lunch, and the whole of the afternoon in the Vatican. The tour guide, made it feel like a very leisurely day, whilst at the same time fitting a lot in to the day. The best excursion of the entire trip.
Besides Cavtat, this tour also took in a guided walk around Dubrovnik's old city. Extremely informative and interesting, although by the time we got to Dubrovnik, it was packed with tourists!
This tour took you to parts of Venice you would never have found on your own, was unhurried, but covered a large area. Fascinating and worth every penny.