Nice location, good restaurant and the ferry, which is one of the last of its kind in Germany.
Extract from Wikipedia:
The wooden barges originally used for ferry operations have now been replaced by modern vehicles made of metal. Since August 2005 a modern ferry boat called "St. Adelheid ”, whose hull is made of double-walled aluminum. It can carry 20 people or about 10 people with bicycles. The ferry was built in the Lux shipyard in Mondorf, a few kilometers away, and financed by the city of Troisdorf and with the help of private sponsors. The dark green painted hull is marked on the starboard side with the lettering "Stadtviertel Beuel", on the port side it reads "Stadt Troisdorf".
The last previous model, a steel Gierponte (christened “Sieglinde”) was in operation for 57 years and is now used as a planter on land. It can be viewed in front of the “Zur Siegfähre” excursion restaurant, which has been located on the Bergheim riverside since the 1920s.
The environmentally friendly, emission-free traffic connection works with the help of the flow force, which together with a large stern rudder ensures that the ferry glides along a wire rope stretched across the river. For this purpose, the boat is connected to the coulter rope with a rope (Giertau) and a roller attached to it. When the water level is low and the current is slower, the ferryman can intervene by means of a pole to support or change the angle of attack of the ferry.
The journey takes about 1½ minutes and costs 50 cents per adult or bicycle, 30 cents per child. The ferry service is usually maintained from Easter to the Day of German Unity from 9:30 a.m. to 8:00 p.m. and on Sundays from 9:00 a.m.