Travel to Konstanz
From other countries, the easiest way to get there is by plane to Zurich and from there by train to Constance. From the airport there is a train that goes directly to Constance.
From within the country it is possible to travel by train or bus.
Accommodation
There are several accommodation you can choose where you can easily get to the university:
How to get to the University
https://www.uni-konstanz.de/en/study/study-essentials/accommodation-and-mobility/mobility/ty/