First of all, I have to say we stayed there in October 2011, not 2012, so something may be different by now. I've lived in Karlsruhe, so I knew that this hotel was far from the city centre (it's in Durlach, a stadtviertel of the city), we chose it because the hotel has a free car parking.
One can easily reach the city with a trolleybus in about 15 min, however the stop is not that near to the hotel!
Room was simple but clean, nothing to complain about it. Breakfast has to be paid separately, and we didn't had it, we bought something in "Real" supermarket near the hotel.More