For me Middelburg was the worst field to spot...
No, Middelburg (actually called Midden-Zeeland, EHMZ) is easy. Just ignore the field altogether and look for the point where you join downwind. You need to join from the North in any case, so follow the "Veerse Meer" lake until almost its southernmost point (actually the little harbor just NE of the southernmost point), head due East or West at 700 ft, look left or right as appropriate and hey presto, there's the field.
But in general, yes, it helps to use Google Earth to spot a few useful landmarks to find the entry point in the circuit, in addition to the runway itself.