This has been about my forth stay at this hotel. Visiting most years for the Hannover Messe (Fair).
This is a Hotel Garni which basically means Bed, Breakfast and other services such as laundry. No bar, no restaurant . Actually that makes it perfect for a business trip as every night is usually a dinner at different places in the city anyway, and there are plenty to choose from.
The hotel is a nice 3 star place, breakfast is fine and typically German. Staff are friendly and helpful. The layout is old and a bit of a rabbit warren by comfortable nonetheless.
Price during the fair is quite high and it is really necessary to book well ahead. I suspect it will be much cheaper out of the fair times.
Location is very good, about 10 min walk from the main train station.

I stayed here during a business trip for one night. The location of the hotel was optimal for me as it was quite near to the client office. The personnel at the hotel were nice, cheerful and eager to help. The room was modern will all the basic amenities. The bed was quite comfortable and pillows were soft. I will surely stay here again.

Around eight to ten minutes walk from the Hauptbahnhof (main station), but easy to find. Reception efficient. Room was on the small side but acceptable. Breakfast buffet (six euros) had a good spread, enough to set you up for the day. Price (39 euros for one night, single room) good, but would not want to stay here for an extended stay.

Nice hotel in Hannover City Centre, very friendly staff, good rooms and beds, nice breakfast, just about 10 minutes walk from main railway station.
Would recommend.