Kristen is one of the best hosts I've had here on Airbnb. She was incredibly accommodating and responsive to all of my questions. She even allowed us to check-out later since we had a red-eye flight and was quick to provide an updated access code when ours expired on our last day. Even check-in was smooth because she gave such detailed instructions (with an emailed guidebook and text message).
Her place is lovely and accurately described - three floor loft with lots of natural light - it was perfect for our trip. It was also centrally located and even had a private / gated parking area behind the building with an assigned spot. As mentioned by other reviews, there is a local shelter around the corner, which in turn, attracts a lot of the homeless community in the area. I personally don't think this should deter you from staying at Kristen's place as we never felt threatened or in danger. I would only note that some of the folks were a bit vocal on the street which could be heard while we were in the loft, but again, really a non-issue in the grand scheme of things.
All in all, if i were ever planning on visiting Denver again, Kristen's place would be on the top of my list! I would definitely stay there again.