Really enjoyed the tour, amazing places. our guide Roberta took really good care of us. Highly recommend taking the boat in Gubei Water town. It's 80 RMB extra, but so worth it. Lunch was okay. Simatai Great wall was very nice and not crowded at all, barely any people. I thought like the tour was a bit too long, could be 1-2h shorter, since Gubei is not that big, you could see it all in 1h.