We had a wonderful time at Corinna. It is so beautiful and so peaceful, we didn’t want to leave. The cottages are very comfortable, make sure to take everything you need in the way of fresh food if you are self-catering as there is nothing non-perishable at the General Store.
We did both cruises, the Arcadia and the Sweetwater and would recommend both as they were different experiences and both great. Also, do not pass up the chance to go for a kayak, a very peaceful way to get quite close and personal with the gorgeous scenery.
Recommend coming from Hobart as it is a much nicer trip than from Launceston even though it is longer. Also, if you come from Hobart you need to catch the Fatman barge across to Corinna so factor the opening times into your travel plans. Anyway, all up, definitely worth the trip!