What’s it like to be a startup in Denver?

I’m writing a story from the perspective of startups about the ecosystem in Denver. Please elaborate as much as possible on the questions below and feel free to add anything I may have missed that you think is important to understanding Denver as a startup hub. Is the startup ecosystem in Denver supportive or competitive? Is funding hard to come by or free-flowing? What company culture defines Boston? What are the most popular niches in Boston? Requirements: Investors, entrepreneurs, startup founders preferred. Please include title.