Snowdon view, brynrefail, just outside llanberis.http://www.snowdonview.co.uk/
Seasonal tourers from march-january.Quiet site, pool, playground and bar/ There may be a waiting list. We like it, this is our third year here. Gets a bit windy though!
Other sites in the area that we looked at when we moved here were Bryn gloch and Conway tourer park.
A lot of tourer sites that offer seasonal pitches havnt got webpages, driving around the area and asking at sites might payoff.