Drachenburg Palace is 1.8 mi (2.9 km) from central Königswinter, why not stop by during your stay.
If you're planning a bit of sightseeing head to Schloss Drachenburg— just one of the monuments located 6.5 mi (10.5 km) from the centre of Bonn. You could also start your cultural experience by heading over to the museums in the area.