Hi Andy Taz
If you come out of Calangute Via the roundabout where the big white church is you can either go towards Porvorim upto the highway or take the Mapusa road , well take the Mapusa road and follow the Mapusa road for about 1 mile may be a little more and it is on your left hand side. it is a bit out of thew way, you will have to use taxi's where ever you want to go and don't let them rip you off.
Enjoy
Mike