Impy,
We loaded onto the boat the morning after we got to Juneau. We saw whales all the way down, probably 15-20 different humpback. It took about an hour, but I think my kids thought it was the best hour of our vacation. While we were there, we stayed in a Forest Service cabin, and my sister's friends came up from their cabin with fresh crab. We sat on the beach, ate crab, drank adult beverages and watched the whales play at the harbor mouth. We explored the abandoned cannery buildings and cabins and hiked to an old Tlinget graveyard. Absolutely gorgeous!
If you've got a spare half-million laying around, there are about 5 acres for sale, including semi-restored cannery housing.