In reply to TheDrunkenBakers: Capel Curig is your best bet, small camp site on farm, bunkhouses also, will look up the name in moment. Good pub and grub.
But, unless Snowdon is still difficult due to snow and ice, or you've done it so many times, dog can't scramble, etc. Then it's not that bad a walk from Pen y Pass. Up and down on 2 tourist paths.
If Snowdon is still that difficult, then other peaks and paths will be too. Someone will give a snow and ice clear altitude soon.