I can highly recommend the hotel if you are at a c...

I can highly recommend the hotel if you are at a conference or exhibition at the RAI. If we walk, it takes you 15 minutes door to door to go to the conference center.
The hotel itself is clean and well maintained. The elevators are a bit old (hence slow) and do not expect too much from the gym. You have the essentials, but if you want to lift heavy or run (there is only one treadmill) you should look for alternative gyms. As for running, there are plenty of options around.
The hotel bar closes a bit early, so if you plan on a late evening meeting you should stay in town.