DGS handling the transfers to/from airport was right on time as were the tours of historical Rome and Vatican City. Quality of guides was excellent.
We thought the tour of historical Rome was a little pricey (450 Euro plus tip) since the guide did not go into any of the attractions but rather waited in the car. So your “guided” tour was essentially a fast briefing in the car before entering. Also, this tour did not include the cost of the tickets to get in the Colosseum/Forum.
It is important to note that the price of the tours, includes round trip airport transfers.