I stayed for a week at David's place. I enjoyed its comfort and spaciousness. David is also an excellent host. His communication and availability were on point during my whole stay. I was also very lucky to meet David at the airport when I arrived, as he was just coming back from trip himself and was able to give me a ride.
The only thing I would mention to future guests is to bring earplugs when you're sleeping with the window open because the AC is a bit noisy. The street itself is not too busy or noisy.
There are bus stops (line 10) close to the apartment, but I found that the busses in Denver can be a bit unreliable. Take this into account if you need to be somewhere.
Overall: great value for money!