I made a trip to Tibet in 2018. I had very positive experiences with Third Rock Adventures based in Kathmandu, Nepal. The travel consultant, guide, and founder were prompt, friendly, and knowledgeable about my many questions and special requests, and the tour. Everything was smoothly handled. We flew from Kathmandu to Lhasa, and she also made the flight for us, and especially the visa collection in Kathmandu was very well organized. The local tour guide was a friendly and amazing person. Luckily, I didn't face any complexities and the tour was the best Tibet Tour.