Take a train! Zwolle is a major train hub in the Netherlands, that has good connections. Also from Münster, Dortmund or Hannover you have good connections to Zwolle.
Starting in Goch you can go via Kleve to Nijmegen and take a direct train from there. Or you go by car to Boxmeer and take a train from there to Nijmegen. I can provide you with cheap train tickets from any dutch train station to Zwolle and back for 7€ per direction. Just text me.
Are you crazy, I won't take a train to Zwollle!
You can also go by car to Zwolle. But be aware that finding a place to park can take some time and might cost you some money. I would recommend you the parking space at Schuttevaerkade 83.
Great! Look up into the sky and check if you can see this building:
If you feel like walking, leave the station towards the city center and just walk until you're there.
If you're too lazy to walk, get bus 1 (in the direction of Stadshagen) or bus number 2 (in the direction of Holtenbroek).
Look at the image above and go to the building where the red arrow points at. Ring at 72 or follow the party sounds. Congratulations, you have reached your destination!