Location was about 25 minutes to Stuttgart city centre by tram. Tram station was only 200 meters away. I you planning to go to Expo center, travelling time is about 1hour 15min, by tram and train.
Room was clean and nice, Wlan, you need to pay 7 eur per day more, breakfast was nice and full of choices.
Nice and clean hotel, I really use this later.
Tero