Awesome experience !
We were 6 pax in all (5 adults + 1 child). 4 of us had opted for the river rafting and other activities. The river rafting in itself was a good experience, the raft typically accommodates 9-10 rafters, we had to share the raft with another group of 5.
The are about 4-5 good rapids, it was good fun. It is pretty safe and almost no instance of rafters falling in water. You can dive into the river when the waters are still, all have life jackets so you float anyways.
The meals were decent, not great. but typical to a campsite. The room (small cottage) was neat and tidy, it was right on the river and had a nice patio on the river.