Like most of the reviews here, I came across this agency online (just from Google results) since we needed a private car to bring and tour us around Ninh Binh area.
We availed a private car service with a driver for 1 day for our trip from Hanoi to Ninh Binh and the tourist spots around it. As compared with the 2 other travel agencies that I was able to search for online prior to our trip to Vietnam this December 2016, Golden Holiday Travel offered the most affordable rate. Mr. Ban Vu DInh, the one who arranges the reservations responds quickly via emails. They accommodated the tourist spots we wanted to see, and also responded to our request to which available vehicle model could we use (we had a choice of Ford or Toyota).
They require a 30% deposit, which I sent through Western Union, then they gave me additional details for the private car service.
We paid to the driver after the tour for the remaining payment. Mr. Huy, our driver was very nice and excellent! He fetched us from our hotel in Hanoi then drove us to the different tourist spots in Ninh Binh, Tam Coc wharf, Hoa Lu temples, Hang Mua viewpoint, and lastly to our hotel in Tam Coc. Mr. Huy also drove us at a restaurant specializing in goat meat, as we requested.
They provided us with a Ford minibus, we were just 4 but it could sit around 10 or more passengers. My mom and travel companions were very satisfied as everyone can sit comfortably. Will definitely recommend this travel agency :)