Tour in the Spreewald from Lübbenau / Lübbenau, Spreewald

We went from Berlin to Lübbenau and participated in a very beautiful Spreewald tour. It was basically a "familiarization trip" (Duration: 2 hours, price: 10 EUR per person).
In the Spreewald (Spree Woods) you can enjoy an amazing silence and relax while driving by boat.

I would love to go back to the Spreewald and then to do the Grand Tour (Duration: 8 to 9 hours, costs: 25 EUR per person).

Note:
There are many providers for tours in the Spreewald.
We went with the existing since 60 years existing cooperative and I would book my ticket there definitely again (it is as well the only provider for the big tour).

Information:
There are no fixed timetables, the boats put off from 10:00 h as needed. There are plenty of boats, so that even with a large number of tourists there are no long queues.
You will pay directly at the ferryman. They are private business.
The minimum group size is twelve adults. The boats usually drive with about twenty people.