Actually, I found a big advantage of using Denrus. The cost was not major, and we had just a handful of people with our guide. We were able to designate exactly where we wanted to go, and, especially in the museums, the tiny group was well worth it. When I returned to St. Pet. on my own, we had three of us with a guide and I thought the cost was really reasonabl. I realize it is not the same as a free excursion, but I really benefited from it and would do it again.
