After you got Ede bus station, you should pass through the Ede train station, then you can find several streats. Please go on the left way, walking for about 25min until you find GGD (with a flag in front of its door).
Don't warry. A X-ray test is necessary for the application for residence card. It is easy, just for 5min. However you maybe feel some unconvenient when you have to take off all shirts before a lady doctor.