Please

I enjoyed staying here James. 1/2 mile away from Coed-y-Brenin too if you can take a bike 🙂

you going to narrow it down a touch
NW Wales is quite a big place, what do you want to do
cycle, beach, walk, pubs close by

my choices would be Bagnol at trearddur bay and riverside in betwys y coed
or cwm llannech (sp) also near betwys

another vote for caegwyn (but is that not mid wales)

We stayed here: http://www.forestholidays.co.uk/camping_and_caravanning/our_sites__locations/wales/beddgelert.aspx quite a few times..

Really, really nice, with good facilities…

caegwyn is NW Wales AFAIK

We quite liked this one
http://www.snowdonia-wales.net/acc/camp/dolgunuchaf/default.asp

http://www.caegwyn.co.uk/

it is also a campsite
afaik

Graig Wen orCae Du, nr Tywyn

The site in Beddgelert also called Cae Du is nice. Not so far West though…

Stayed HERE a few times.
Thoroughly recommended.
Has secure bike storage & washing area also.

Better than those chav infested hell-holes around Barmouth.

Thanks all – sorry should have said ideally near to beach (or within short drive)

Cae Du is on the beach, albeit a rocky one. Really is magic sitting there with a camp fire, watching dolphins swim past.

If you go along the beach, about 200 yards south, then there are a couple of really large rocks that create almost a pool, with a flat shelf to walk out on, really nice place to swim/paddle, loads of rock pools.