We recommend a hotel in the city center, since the conference location is about 10km south of the city center and there are no restaurants, shops etc. and since the social event Dinner at Goldfish (Schlossstr. 57, 70176 Stuttgart, Germany, www.goldfish-stuttgart.de), is also close to the city center.
We cannot make any hotel reservation for you and we do not have reserved rooms at any hotel.
But you can find nearby hotels via Google Maps or the usual booking sites, e.g. HRS.com, or Booking.com.