Not the hotel I would take if wy wife was joining, but this is a very good and efficient business hotel. Clean, quiet, eventhough straight next to the station, rooms are OK.
If you are lucky, you have free parking, but the parkinglot is very small.
Dencent breakfast, and friendly staff.

Stayed 2 days with colleagues, rooms are small but clean, same stands for bathroom.
It's one of the cheapest location in Kassel, next to the train-station, so didn't have high expectation. But the hotel was fine, slept well, does the job if you need a basic (and non-central) location.

This hotel has an excellent location in case you are travelling by train. The ICE train station Wilhelmshöhe of Kassel is situated practically right at the doorstep.
You are also close to the trams that go all way down to the city center.
Included in our package hotel price was even a daycard for the Kassel trams and busses.
The room was maybe a bit small and felt a bit plastic in the design. But it was clean and practically designed.
Included was a breakfast buffet with all the things you normally need for breakfast.
In all a good value for the money you pay and very close if you are travelling by train.