Needs to be in Scotland - I think that we have done the west coast to death in recent years (DH thinks we should go to the west coast).
With a dog, we are looking for good walking somewhere beautiful, ideally not on the west coast.
We like basic sites, no EHU or frills required ... definitely not clubhouses, quite like tent only sites, not bothered if it allows fires or not. Spidery showers are fine as long as they are otherwise clean with hot water.
We are a six hour drive from Inverness, Oban or Aberdeen - anywhere within six hours is fine.
Grateful for recommendations, mainland not islands (we are staying on Mull later on in the year).