Itinerary / Travel Plan - Long bu rewarding.
Guide - Good, need to talk to clients about Tibet during bus rides.
Driver - Very good, need to drive more carefully.
Accommodation - Lhasa good, Shigatse perfect.
Vehicle's Condition - Great, very comfortable.
Agency - Really good, fast communication.
For more details, you may read client's review on TripAdvisor Page - Very happy with a service.