Lucknow is rich in history, culture and cuisine, and December weather is ideal for exploring the city. The flip side is that there is too much smog. That said, we really liked how the tour was organized, and our very knowledgable and pleasant guide Vishal.
It did not seem like the guide knew Lucknow, or has any passion to learn about the city. He tried his best and shared a few recommendations and hidden gems, but overall, not worth it. The local guides know a lot more.
Would recommend this authentic tour with a local. He will show you round historical buildings. Ask him lots of questions about life in Lucknow he will be happy to answer!