Mister Chan was great. The best way to go about this.
My friends and I only had a limited amount of time in Cambodia. Only 2 days and we wanted to see Angkor Wat. Worse still, we were staying in Phnom Penh. I read online about ways to get to Angkor Wat and the reviews highly discouraged the night bus. I contacted the number and Mr. Chan was assigned to take us. He picked us up at 10pm so we could drive all night to get to Angkor Wat by sunrise.
It was a great choice. Mister, Chan was a great guide. He thought we were crazy with the schedule that we gave him in our limited time but he accommodated us more than we expected. He really made our trip worth the pain of having to be in a passenger van for 12 hours.
I would make only two recommendations to Mister, Chan and his associates. They should install HIDs for the headlights on the vans. This would make this trip so much safer traveling at night. I would also suggest that they get a stereo for the vans so they could connect to Bluetooth. Being in the van for so many hours is a big drag. If we could have controlled the music, the time would have passed so much faster.
I will definitely be contacting them next time I am in Cambodia. Excellent service.