Host was extremely knowledgeable about the city. Experience was top notch.
The guide was very well informed and very interesting. He was also interested in us. I would suggest that it be much clearer as to where you get the tour. We had no idea and were at the Convention Center. We called and were told to go outside of the Hilton. That is not where the tour picked us up. We just saw the bus on the street and waved it down.
The tour isn't really a hop on hop off, just a 90 minute bus ride that takes you to some of the key districts in Houstons, however you don't get the opportunity to get off the bus. The tour guide was knowledgeable and friendly.