Our room was huge (comfort category), and very clean - could not be faulted. Location is not near vibe, but very well located if have meetings in Bonn and surrounds - close to highway and easily accessible. Staff extremely friendly and helpful. If looking for some vibe - go to Hennef station - there are some beer gardens, some along the River Sieg.
If you want character, than not for you. But if you want practicality, functionality, and space, then highly recommended!
