We booked the Tour of Parque los Alerces with the Company Glaxiar in October 2018 and we can highly recommend it. We went with a rental car to the Park. If you do that, don‘t leave any later than 8am from Esquel, maybe even 7:30! That is, because the walk from the parking lot to the boat takes about 30-40 Minutes and is so beautiful in itself that you shouldn‘t miss it.
The Tour itself was very well organized, the captain and the tour guide very friendly. We took the Tour to see the Alerce Tree that is 2600 years old. The boat ride there was very beautiful, with snowcapped mountains on all sides, a view of a glacier. Near a lovely island we had a break for coffee or argentinian Mate tea and some cookies, which was a nice touch!
Then we disembarked at a remote edge of the lake where we took an easy walk/hike of about an hour to reach the main atraction: a huge 2600 years old tree! Here and there we got explanations from our guide. Afterwards, we got some time back on the boats rear deck to enjoy our packed lunch.
All in all, a lovely day on a lake, feeling rather remote and relaxed. The hike is not very challenging. It was one of the most beautiful days we spent in Patagonia snd we can fully recommend Glaxiar tours. Recommendation: Get a rental car for the day and pick a spot for a pick-nick after the tour on your way there. Then after the tour, see the waterfall and have a pick-nick.