It was an epic adventure but turned out 6 days was not enough. We approached Brothers Tour to organise a short visit before our visit to the Maldives (coming soon). If you wish to visit Sri Lanka I highly recommend Brothers Tours (www.slbrotherstour.com). Just email them the days you would like to visit and they will put an itinerary for you.
We visited a lot of amazing places, started with an elephant safari, then went to Sigiriya. Next, we visited Dambulla, Kandy, Nuwara Eliya, tea plantations, Ramboda Waterfall and then we headed south to Unawatuna. We missed so many places we will definitely have to go back! Personally, I would recommend 2 weeks.