We have just returned from a 4 night stay at the Grand Central. The hotel is well located for Oktoberfest, approx. 10min walk. The nearest S Bahn station (Hackerbrucke) is just around the corner so you can easily get around the city. The hotel is approx. 20mins walk from the city centre.
The hotel is the most quiet hotel that I have ever stayed in. We heard no noise from outside or the room cleaners at any time which was great as I am a light sleeper.
The bar is OK but we were there for Oktoberfest so didn't spend long in the hotel bar.
The staff were very efficient & helpful. On arrival we asked for a couple of extra pillows as there were only two in the room. Extra pillows were brought to the room within an hour.
The bed is massive with loads of room for stretching out.
The only downside for us was that the hotel room & corridor smelled of smoke so it may have been used previously by smokers.
The swimming pool is small but we were the only people in at the time so this wasn't a problem for us
If you travel to the hotel via train then get off at the Hackerbrucke station & not the Hauptbanhof as we did. Hackerbrucke is 5 mins from the hotel. The Hauptbanhof station is over 15 mins walk.