If you're visiting Central Vietnam, you absolutely must book this tour: My Son Sanctuary + boat trip + banh mi. It was truly fantastic! The tour operator proactively contacted me very quickly after I booked, and even sent a reminder the day before with detailed itinerary information. Their service was absolutely excellent. Our guide, Mr. Thien, spoke fluent English and provided a very professional and detailed explanation of My Son Sanctuary's history. Afterwards, we enjoyed a Champa dance and ancient musical instrument performance, which was also wonderful. The My Son ruins are nestled in a beautiful forest, and walking through them gives you a serene and lovely feeling. Later, we drove to the pier, and the boat ride back to Hoi An Ancient Town was a unique experience. In the evening, with a gentle breeze blowing and enjoying banh mi, I felt that the afternoon My Son Sanctuary tour was quite perfect.