[bella]

it is on a bus route, but from the koln central station it's about 4-5 hours by public transport. if you go to bahn.de and put in nurburg welcome center as a final destination, it gives you options to the lindner hotel which is just across the street.

you would be better hiring a car from the airport for a few days if you have a driving licence you can use in the eu.

when i've had to travel without a vehicle from the circuit i've had to get a taxi to a main railway station like koblenz to be efficient with time which wasn't cheap at all. you can maybe save some money by going to somewhere like bad neuenahr (the last train station on the recommended route) and then avoiding the buses but you'd want to find a taxi ahead of arriving and have a return booked too.