We booked a five-day tour of Siem Reap and Phnom Penh with Chamrong. Chamrong is a very knowledgable, flexible, polite, and punctual tour guide. He has a very deep knowledge of all of the temples and sites we visited and the history behind them, and is also able to recommend everything in Siem Reap, ranging from activities to cafes and restaurants. He is also a very safe driver. I would definitely recommend that anyone who visits Cambodia and Siem Reap book a tour with Chamrong.