I'm in room 03.06 on the third floor of the Mercator 1 Building, which is on Toernooiveld 200. The building is at the corner of Toernooiveld and Heyendaalseweg. This is next to the Huygens building, the main building of the Faculty of Science.
If you come by car, there is (paid) parking behind our building, in parking lot P12, of under the Huygens building across the road, in parking lot P11.
To get there by public transport, you can take the train to Nijmegen Heyendaal station, which is a few minutes walking from the university, but it's usually quicker to take the fast and frequent bus service from Nijmegen Central station to the university campus, bus number 10 aka "Heyendaal Shuttle" Closest bus stops are "Huygensgebouw" or "Station Heyendaal".