Great
The guide was excellent, and very knowledgeable. They explained things very well and were happy to answer any questions we had. I thought the value for money was good, although for the price, I might have expected the cost of the metro ticket to be covered. At approximately 4 hours, including a half-hour break for lunch, it is a long time to be walking, especially if it is cool or not so nice weather. But overall I was impressed and would recommend this tour to anyone interested in history.