It was great because the tour also included a tour of the downtown area and a few other parts of Lima. My guide, Arturo, spoke fluent English and walked me around pointing out points of interest and explaining the history. Of course we stopped for a quick local snack!
We had a delicious and filling lunch amongst locals where I tried several authentic dishes and beverages. So good!
One of my favorite activities was going to the market and tasting all the different fruits that are native to the area. 
I would definitely recommend this tour!