Criccieth is in Snowdonia and at the edge of the Llyn Perninsular. Exploring Snowdonia and the Llyn makes for a great holiday. You can be active or just opt out and relax.
There is plenty to do from visiting Castles, National Trust properties and having a nice lunch put, to going on the longest Zip wire in Europe or doing a Bear Grylis day out
If you like walking, its the place for you. If you want to eat out there are some great restaurants.