I just completed an extended European trip with my family. We used Airbnb the entire way, and this was easily the nicest place we stayed. I almost didn't write a review because I don't want anyone else to know how great it is (so that it's available whenever we want to stay there).
The photos and description on Airbnb are good, but they don't capture just how amazing the place is. We had a spacious house with a wonderful courtyard that made it feel like we were living a luxurious life. I would have stayed forever if I could have.
The location is right by the Rhine River, so we took many evening walks as the sun set over he Rhine. We were also able to easily walk into the center of Bonn and drive to Cologne, Koblenz, the Siebengebirge, and other nearby towns and sites. It was perfect.
Marion is a wonderful and gracious host. I am so glad that she provided such a beautiful place to stay, and I would definitely recommend it to anyone (as long as you aren't planning to stay there when we want to).