Job in Queretaro (Guadalajara)

Hello,

I got proposal to move with family to Queretaro for contract for 2 years.
I have not been before in Mexico so I have a lot of doubts and questions. I would be appreciated for your answers of my questions and some advices as well.
Could You tell me:
1. what kind of city is Queretaro?
2. what about public transport? is it expensive? is it safe?
3. what about safety in this region of Mexico?
4. what about health care? (We have 2 years old son) Is health care good
quality?
5. what about Mexican people? are They friendly for foreign people?
6. what about cost of living? what is the cost of rental an apartment in expats area?
7. How many expats are living in Queretaro?
8. what about blonde hair women? Are they more exposed for some dangers from Mexican side or other nationalities?

I realize that some of my questions can be funny or even stupid but I want be sure everthing before contract.