Well, we just got home from Denver, and I must say that it was easy-peasy being at Richard's place. We never saw our hosts, because we were busy with friends, but everything went smooth as silk. Communication was perfect. The place is clean, quiet, set up the way I would do it myself. We'd stay there again in a heartbeat (and might, since our friends live only a few blocks away).
Side note: We have stayed at many airbnbs. Now I know how to look at the photos for certain things, but even then you can't really tell if there's something haywire. A key thing I look for is whether there are bedside tables and lamps on both sides of the bed. Or is the bed wedged into a corner so the inside person has to climb over the outside person to go to the bathroom in the middle of the night? Richard's place had lighting on both sides of the bed, no wedging in. Nothing smelled weird; the place was light and airy, there are comfy places to sit besides the edge of the bed - very comfortable sitting area with TV - etc. I highly recommend it! Thank you, Richard!