This site, is a lovely and ideal base to visit all sides of the Island, 5 mins from Benllech Beach, great for Famililies and has a lovely dog friendly area too.  Visit Bull Bay and walk along the coastal path to see Seals and Dolphins/harbour porpoises. Visit the beaches on the other side of the island as in Newborough (Woodland paths as well), Aberffraw & Rhosneigr.  Plenty of dogs around the coastal paths.  Visit Beaumaris - crabbing off the pier, Boat ribes to Puffin island, and fantastic rib rides for the adrenaline junkies.  The site is well maintained, Wardens lovely and very helpful.  As some have commented the toilet block is one of the older ones but it's still clean, has warm and powerful showers personally I would rather have this then increasing the charges for staying on the site.