
Like most cities in The Netherlands, Groningen's city center is surrounded by a canal.
Groningen has three train stations, the Central Station, the Southern Station (Groningen Europapark) and the Northern Station (Groningen Noord). All trains eventually arrive at the Central Station. There is a direct connection from Schiphol airport, and from Utrecht to Groningen (2-2,5 hrs. ride).
All buses going to the city of Groningen eventually arrive at the Central Station.
Driving in the old city is not the best option; parking is not always easy to find, none of it free.
There is a Park & Ride facility to the east of the city, near IKEA. It is clearly marked when driving on the ring road. Parking there is free, and for a euro a regular bus service takes you right to (and from) the Grote Markt, the heart of the city, within a couple of minutes.
Getting from any place in Groningen to the centre will take at most 20 minutes by bike. This makes the bike a fast, cheap and easy way to travel Groningen. Don't get scared by the overwhelming amount of bicycles. The city houses tens of thousands of students, whose primary means of transportation is the bike. Be advised though; bicycle theft is pretty high so use a good lock.
The centre of Groningen has many nice little cafes or restaurants where you can eat. Groningen is a real university city, so there are plenty of cafe-restaurants where you can eat for about €10.
Groningen's reputation as university town is borne out in its nightlife, which is comprehensive, with numerous options for drinking and clubbing. There are also several places to play pool/billiards. Most bars have the standard Dutch beers, but more and more international, especially Belgian, beers are beginning to have a presence. Bars in the down town area do not have fixed closing hours. Theoretically they can stay open for 24 hours a day, which a few bars do.