River Run Retreat was exactly what we needed for our daughter's wedding weekend nearby. The house itself is terrific! Well supplied, comfortable beds, lots of space, nice kitchen (love the big island!), nice little homey touches, plenty of extra towels/blankets, outdoor grill, tastefully decorated, good reading material (if we had had time!).
Listening to the Yellowstone river at night (directly behind the house) was a Paradise valley lullaby. Easy walk over Carter's Bridge to the river access. Just be careful walking on the bridge -- there's not much room to move over for vehicles.
The house is close enough to a busy road that, during the day especially, you can hear traffic. So it isn't totally quiet, if that's what you're looking for. But it wasn't an issue for us, as we knew to expect it.
Overall, River Run Retreat was is a great house in a good location, and we thoroughly enjoyed our stay. Thanks, Nicole!