The Lichtenberg-Kolleg Historic Observatory is located in southeast Göttingen, just outside the city center. It is a 20-25 minute walk from the train station. Alternatively, you can catch the No. 21 bus at the train station in the direction of Zietenterrassen and get off at Leibnizstrasse. From there it is a short walk to the observatory.
Hotel Stadt Hannover in Göttingen – map
http://www.hotelstadthannover.de/
Intercity Hotel Göttingen – map
https://www.intercityhotel.com/hotels/alle-hotels/deutschland/goettingen/intercityhotel-goettingen/zimmer
The website of trains in Germany:
https://www.bahn.com/en/view/index.shtml
General information about Göttingen:
https://www.goettingen.de/index.php?lang=en
The Göttingen Campus:
http://www.goettingen-campus.de
Possibly the most famous song about Göttingen:
https://www.youtube.com/watch?v=s9b6E4MnCWk