We had a great time on our walking tour with Jenn Andres. Jenn was fun to spend the day with, professional and knowledgable. We learned a lot about NYC and she was able good at creating a fun group atmosphere. The walking wasn't too taxing - we went at a comfortable pace. My mom, in her mid 60s had no problem, although she is an active person. Jenn was very respectful when discussing 9/11 and gave time for us to explore the area on our own. This was a great way to get a good layout of the city. I would definitely recommend it.