Within the city of Groningen everything is within walking distance. The trip from the station to the hotels is about 1 kilometre. However, if you feel like taking the bus, you can look up connections at http://journeyplanner.9292.nl/. A useful ticket is the "Euro-ticket", which you can get for exactly one coin of 1 euro (no smaller combinations) from the driver. It is valid for 1 hour within the whole of the city.
Below you can find a map of downtown Groningen. The train station, conference site and recommended hotels are indicated.
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