1. The Danube Cycle Path (Donauradweg) is a popular cycling route that runs along the Danube River for approximately 1,200 km, stretching from the source of the river in Germany to its delta in Romania. The section of the route that runs through Vienna is approximately 30 km long and takes cyclists through scenic areas such as the Danube Island (Donauinsel) and the historic district of Vienna. The route is mostly flat and easy to cycle, making it accessible to all levels of cyclists. Along the way, there are numerous cafes, restaurants, and sightseeing opportunities to enjoy.

2. The Danube Cycle Path is open year-round and does not have specific working hours. However, certain sights and attractions along the route may have their own operating hours. It is recommended to check ahead for any closures or opening times. There is no specific phone number for the route, but information can be found on the official Vienna tourism website.

3. The Danube Cycle Path is free to use and access. Cyclists can bring their own bicycles, or rent them from various shops located throughout Vienna. Public transportation such as the S-Bahn and U-Bahn can also be used to access certain parts of the route.