Hi Martin,
We visited Seaview International 2 years ago and was one of the best sites we have visited in terms of cleanliness etc, well laid out, it is the only site I have ever visited where each serviced pitch had their own dustbin which was emptied by the staff, staff really friendly and helpful. The shop isn't large but does stock essentials. The pool area is nice with sunbeds, you can play Tennis, Badminton, Crazy Golf all free of charge you just have to keave a deposit at reception.
Nice dog field if you have a dog with views of the sea.
The site itself is a bit out of the way really, you can walk to the nearest beach which is a nice sandy beach but no facilities down there, it is a steep climb back up. There is also a coastal walk along the cliff edge.
Would not let the location put me off there is plenty of areas around to visit (by car)would reccomend it to anyone and would definately visit again myself.