My brother insisted me to do this trek and he even asked me to find the best travel agency. I did a lot of research and stumbled upon the website of Third Rock Adventures. The website displayed everything for travelers, from review to itinerary. I studied their background and even talked with the founder and travel consultant. They emailed me and answered all my questions promptly and precisely. I was impressed and booked them. The Bhutan tour guide, the driver and everyone was respectful and friendly. We were offered the best room, food and other services. The itinerary included trip to Tiger Nest Monastery as well. We successfully did the trip, there was no any problems. My brother thanked me for choosing Third Rock for the trip.