I highly recommend this Ninh Binh tour. The scenery is beautiful, and taking a boat through the valley is fantastic. You can slowly enjoy the beauty of the mountains. The boatmen are amazing, paddling with their feet for two hours. There's also a mountain climbing itinerary, and the all-you-can-eat buffet lunch is great. The value for money is too high. It rained on our outing, so we didn't ride bicycles, but the overall experience was wonderful.