We did 4 tours with Xuan Tu, 1 in Hanoi, and 3 in Da Nang and all of then were excellent.
We had 3 different guides for the 4 tours, but by far my most favorite guide was Anthony. He was polite, punctual, knowledgeable, and spoke English very well (all the guides did). We did 2 tours with Anthony in Da Nang, one to Hoi an and one to the Cham museum and My Son.
I would definitely recommend everyone to request for Anthony if you plan on booking a tour with Xuan Tu in Da Nang.
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Traveller: G7RSl from Tripadvisor