I recently stayed at The Slate Hotel in downtown Denver and I found it to be very convenient in terms of its location because it was within walking distance of most of the places I wanted to go.
Everyone I interacted with on the staff was very friendly and helpful.
The hotel was also very quiet. It is my opinion that most of the people who stay at this hotel are probably in town for business, since the hotel is next to the Colorado Convention Center. For this reason, I don't think there were many children, if any, present. I think the lack of children helped to make the atmosphere much quieter than it may have been otherwise. Also, my room was right next to the elevators, and I rarely heard the ding from the elevators or the noise from people talking in the hallways as they got on or off the elevators.
My particular room did not have a safe and I have read mixed opinions on whether an in-room safe is actually present. While this did not really affect me, I know having a safe in the room is important for some people, so you might want to check ahead of time if this is important to you.
One concern I had after I had completed my stay was whether the hotel's staff was actually committed to saving the environment, as was indicated on the sign in the bathroom regarding reusing towels, etc. I followed the instructions indicating that I wished to reuse my bathroom linens, but they were changed out on consecutive days despite this fact.
Overall, I would stay here again.