We loved Deutsche Post Hotel. We flew into Stuttgart and just took s bahn directly to Bad Canstatt. Hotel was 2 blocks from s bahn station. Hotel room had refrig with complementary bottled mineral water, sink and stove. Bathroom was clean and had shampoo and soap and hand lotion. Even had small container of peppermints on each side of bed. Breakfast was in restaurant next door and was cute and large variety to choose from.
The volkvest was 3 blocks away. This is closest hotel to fairgrounds. Rooms were quiet and beds were good.