We've just spent a fortnight at Merrose Farm. We pitched on the top field due to a shortage of hard standing at the time of our arrival. The grass was in very good condition despite the preceding damp weather. The slight slope aiding the drainage. No problem levelling our 645 caravan fore /aft, slight slope across that we could live with, although some others were using levelling ramps.  The dog field was a good size and clean, I would have preferred shorter grass, but it was ok.  The hard standing areas were well laid out, albeit a tad cozy compared to the top field. The road layout meant that no one had to suffer excessive traffic. Facilities were kept in a very clean state, and there are two toilet blocks located together so there was always a facility available during cleaning times.  Very nice dog friendly beach at Pendower, 5 mins drive away, best sand (naturally) at low water. Quiet area compared to North Cornwall, charming fishing villages mean good local seafood.  Finally, do not slavishly follow GPS. It may tempt you off of the A3078 onto unsuitable back roads to save a couple of miles...