Short business trip. The NH Hannover is a comfortable, no-nonsense business hotel. The staff are friendly and helpful. The rooms are basic but comfortable. Breakfast was extensive and fresh, again lovely friendly woman serving. The lobby is calm and quiet. It's a bit of walk to the city centre but quite a pleasant one.
One tip - there's a great gym just across the road from the hotel. I got a day pass to it reduced from €12 to just €8 when the receptionist saw my NH Hannover room card. Worth a visit.